BTW, here is my list:
Unusual social environment
Typical examples are prison planets, primitive cultures, political or religious extremes and pseudo-medieval societies. :See: Utopia, Dystopia.
- Aka — Ursula K. Le Guin's The Telling (hyper scientific advancement)
- Anarres — Ursula K. Le Guin's Dispossessed (anarchist)
- Armaghast — Dan Simmons's Hyperion Cantos (prison planet)
- Athos — Lois McMaster Bujold's Ethan of Athos (male-only society)
- Barrayar — Lois McMaster Bujold's Miles Vorkosigan series (feudal military culture)
- Beowulf — David Weber's Honorverse. Very liberal sexual mores.
- Brontitall — The Hitchhiker's Guide to the Galaxy; planet of bird people who live in the ear of a statue after shoe shop disaster.
- Cetaganda — Bujold's Vorkosigan series (genetically engineered culture)
- Chthon — Piers Anthony's Chthon (prison planet)
- Coruscant — The Star Wars films (planet-wide city, seat of Galactic Republic and Empire)
- Crete — Freelancer
- Dorsai — Gordon R. Dickson's Dorsai series (soldier culture)
- Gauda Prime — Appears in the last episode of Blake's Seven, being where one of the characters originates, and where the series' eponymous character is residing. A planet overrun with bounty hunters and the scum of the galaxy - but some of whose inhabitants wish to return it to normality (and the Federation).
- Gethen/Winter — Ursula K. Le Guin's The Left Hand of Darkness (hermaphrodites)
- Gork
- Gor — John Norman's Gor series (men are warriors; women are often sex-slaves; all are generally happy in their appointed roles)
- Hades — David Weber's Honorverse. Prison planet where none of the native wildlife can be metabolized by humans.
- Hain — Central planet in Ursula K. Le Guin's Hainish series.
- Hebron — Dan Simmons's Hyperion Cantos (Jewish ethnic)
- Houston — Freelancer
- Irk (Invader Zim)
- Leeds — Freelancer, a heavily polluted planet.
- Magrathea — The Hitchhiker's Guide to the Galaxy (planet of wealthy customised planet builders)
- Mejerr — Vandread (female-only society)
- Miranda — Serenity (site where Alliance accidentally spawned the Reavers)
- Nark A charlie planet
- Omega — Robert Sheckley's The Status Civilization (a prison planet)
- Orthe — Mary Gentle's Golden Witchbreed (post-holocaust/medieval aliens)
- Pacem — Dan Simmons's Hyperion Cantos (base of Catholic church)
- Parvati — Dan Simmons's Hyperion Cantos (reformed Hindus)
- Pern — Anne McCaffrey's Dragonriders of Pern series (people ride genetically-engineered dragons)
- Qom-Riyadh — Dan Simmons's Hyperion Cantos (Moslem)
- Rimmerworld Arnold Rimmer of Red Dwarf spends 600 years alone on this planet, creating clones of himself in a failed attempt to create a girlfriend. The planet is eventually populated by millions of clones who imprison the original Rimmer.
- Riverworld — Philip José Farmer's Riverworld series (all humans in history reincarnated along a spiral river)
- Rubanis — Valérian: Spatio-Temporal Agent series (ultra-capitalist)
- Sangre — Norman Spinrad's Men in the Jungle (cannibalism)
- Salusa Secundus — from the Dune Chronicles. Nuked-out "hell world" used as a training environment for super-soldiers.
- Shikasta — Doris Lessing's Shikasta (cosmic consciousness)
- Shora — Joan Slonczewski's A Door into Ocean (waterbound culture)
- Solaria — Isaac Asimov's Robot series. People grow up isolated, and eventually lead totally solitary lives, interacting only via telepresence.
- Talark — Vandread (male-only society)
- Terminus - Foundation; Isaac Asimov
- Tiamat — Joan D. Vinge's The Snow Queen (matriarchy/monarchy)
- Yugopotamia (The Fairly Oddparents)
- Xindus — Star Trek: Enterprise (six distinct sentient species)
- Zycos A charlie planet. Some Fantasy Worlds are also depicted as alien planets.
Unusual physical environment
Typical examples are one-climate planets — deserts, waterworlds, arctic conditions and especially jungles.
- Abyormen — Hal Clement's Cycle of Fire (temperature extremes)
- Acid planet — Total Annihilation (Corresive oceans with forests of explosive gasbag plants)
- Aether — Metroid Prime 2, planet with two parallel dimensions
- Aquarius — Giant waterworld that caused the Biblical Great Flood. From Final Yamato of the Space Battleship Yamato series.
- Aquas — Small waterworld in the Lylat System, setting of the video games in Nintendo's StarFox series
- Arrakis — Frank Herbert's Dune (desert world, sole source of Melange)
- Atlantis — Peter F. Hamilton's The Night's Dawn Trilogy (waterworld)
- Ballybran — Anne McCaffrey's Crystal Singer. (toxic world. Inhabitants must form a symbionic relationship with a spore in order to survive.)
- Baloris Prime — A planet from the PC game 'Descent II' which was mostly desert (according to the writers of the game this was because its axis of rotation was exactly perpendicular to its plane of orbit, causing a total lack of seasons on the surface of the planet.
- Bespin — Star Wars (gas giant with habitable atmospheric layer)
- Big Planet — Jack Vance
- Chaos — Exosquad (the tenth planet of the Solar System, composed entirely of dark matter)
- Core Prime — Total Annihilation (metallic with a gigantic computer at its core and a landfill-covered satellite)
- Crematoria — The Chronicles of Riddick movie (periods of intense heat)
- Cybertron — Transformers series (Metallic/Mechanical)
- Dagobah — Star Wars (swamp, Yoda's hideout)
- Dhrawn — Hal Clement's Star Light (high gravity)
- Dragon's Egg — Robert Forward (life on neutron star)
- Echronedal — Iain M. Banks' The Player of Games (a fire storm forever sweeping round an unbroken equatorial continent)
- Ego the Living Planet — Marvel comics (living planet)
- Endor — the forest-moon in Return of the Jedi
- Erna — C. S. Friedman's Coldfire Trilogy (psychically malleable quasi-sentient natural forces)
- Far Away — Peter F. Hamilton's Pandora's Star (triangle of stratospheric mountains, sterilized by solar flare, Starflyer alien)
- Fortuna — Small planet in StarFox 64, it is a world similar to Hoth
- Gamilon/Gamilus — Polluted homeworld of Leader Desslock the Gamilon/Gamilus Empire — Space Battleship Yamato
- Garth — David Brin's Uplift War (weird biology)
- Giedi Prime — Frank Herbert's Dune series (surface covered in upwelling oil, homeworld of House Harkonnen)
- God's Grove — Dan Simmons's Hyperion Cantos (forest world,Worldtree)
- Grayson — David Weber's Honorverse. Toxic, heavy metal environment.
- Hekla — Hal Clement's Cold Front (ice age aliens)
- Helliconia — Brian Aldiss (seasons last millennia)
- Hoth — The Empire Strikes Back (arctic)
- Homeworld of The Micronauts, actually a chain of worldlets connected which resembles the ball and stick molecular model.
- Htrae — Red Dwarf (a backwards version of Earth).
- Hydros — Robert Silverberg's Face of the Waters (waterworld)
- Hyperion — Dan Simmons's Hyperion Cantos (one of 9 labyrinth planets, Time Tombs)
- Ireta — Anne McCaffrey's Planet Pirate series. Inhabited by both people and dinosaurs.
- Ishtar — Poul Anderson's Fire Time (periods of intense heat)
- Jinx — Larry Niven's Known Space universe (high gravity and extreme vertical scale)
- Kamino — Star Wars Episode II: Attack of the Clones (ocean)
- Kashyyyk — Star Wars, particularly Knights of the Old Republic (forest world caused by a terraforming accident, where gigantic trees and furry, sentient Wookiees to maintain them evolved at an accelerated pace)
- Kharak — Homeworld (desert planet) destroyed by an enemy race after space travel is developed
- Kithrup — David Brin's Startide Rising (waterworld rich in heavy metals, which form part of the biochemical structure of its life. Mildly toxic to non-native life. also the "retirement" home of a neurotic race with enormous psi power)
- Lagash — Isaac Asimov's Nightfall (planet where each day lasts two thousand years)
- Lamarckia — Greg Bear's Legacy (Lamarckian evolution)
- LV-426 — Aliens
- Manaan — Star Wars (ocean)
- Majipoor — Robert Silverberg (large planet)
- Mare Infinitus — Dan Simmons's Hyperion Cantos (waterworld)
- Maui-Covenant — Dan Simmons's Hyperion Cantos (motile isles)
- Medea — Harlan Ellison's worldbuilding project
- Mesklin — Hal Clement's Mission of Gravity (superjovian)
- Monea — Star Trek: Voyager (waterworld)
- Mor-Tax — the aliens' homeworld in the first season of War of the Worlds (described as a garden planet)
- Nacre — Piers Anthony's Omnivore
- Namek and New Namek — Akira Toriyama's Dragon Ball (temperate land where trees are scarce, but water and grass abondant)
- Pittsburgh — Freelancer (desert, populated with mining operations).
- Placet — Fredric Brown's Placet is a Crazy Place
- Plateau/Mt. Lookitthat — Larry Niven's Known Space universe (Venus-like with only a small high plateau habitable; colonized by mistake)
- Poseidon — Blue Planet Roleplaying game (ocean world)
- Pyrrus — Harry Harrison's Deathworld (high gravity and psychic animals)
- Regis III — Stanisław Lem's Invincible (inorganic evolution)
- Resurgam — Alastair Reynolds' Revelation Space universe (desert with buried alien artefacts)
- Rocheworld — Robert Forward (double planet that almost touches)
- The Smoke Ring — Larry Niven's Integral Trees & Smoke Ring (gas ring around a neutron star)
- Sol Draconi Septem — Dan Simmons's Hyperion Cantos (glacier covered)
- Solaris — Stanisław Lem's Solaris (Mostly covered by living ocean)
- Star One - a star with a single planet holding the Federation's main computers in Blake's 7, situated between our galaxy and the Andromeda galaxy. Planet destroyed in an intergalactic war.
- Pern — Anne McCaffrey's Dragonriders of Pern. Deadly spore capable of eating anything (except rock and metal) rains down on planet for fifty years every 200-400 years.
- Tatooine — Star Wars movies (desert world)
- Tallon IV — Metroid Prime. All life on planet was horribly mutated following the crash of a toxic asteroid.
- Tenebra — Hal Clement's Close to Critical (high gravity and corrosive atmosphere)
- Terminal — an artificial planet displaying extreme polar flattening in Blake's 7.
- Thalassa — Arthur C. Clarke's Songs of Distant Earth (waterworld)
- T'ien Shan — Dan Simmons's Hyperion Cantos (mountain world, toxic surface clouds)
- Tycho Brahe — From Descent II, a spaceship the size and shape of a planet, mistaken for one until its two hemispheres actually separated to reveal a mechanical interior (metallic/mechanical)
- Ursa Minor Beta nearly always Saturday afternoon The Hitchhiker's Guide to the Galaxy
- Venom — Largest and closest orbiting planet of the Lylat System, setting of the games in Nintendo's StarFox series, bearing an extremely toxic atmosphere and therefore a highly desolate surface. In some versions of the backstory, Venom was previously called Edena because it was supposedly covered almost entirely with forest, possibly evergreen, before Andross was exiled there, suggesting it may have also been a prison planet.
- Vladislava — Boris and Arkady Strugatsky, Noon Universe (extremely turbulent atmosphere)
- Well World — Jack L. Chalker's Well of Souls series (surface divided in thousands of different ecosystems, each one with a different sentient race)
- World of Tiers — Philip José Farmer's book series of the same name (world-sized stepped pyramid with a different environment on each step)
- Yavin 4 — Fourth moon of the gas giant, Yavin; Rebel Alliance stronghold located in the ruins of an ancient Massassi temple (abandoned long ago) from Star Wars Episode IV: A New Hope
- Yellowstone — Alastair Reynolds' Revelation Space universe, the site of Chasm City and Glitter Band habitats
- Zahir — Valérian: Spatio-Temporal Agent series (hollow planet)
- Zeelich, a planet in Little Big Adventure 2. It is covered by a thick layer of gas clouds and beneath lies a sea of lava. Vegetation and civilisation is recurrent only on mountains above the cloud layer. Zyrgon, a icebound planet in "Halfway across the galaxy and turn left"
- Zoness — A planet that once was nearly all tropical in its climate, and home to many island resorts in StarFox's Lylat System, the whole planet was turned into a toxic waste dump by the forces of Andross according to the storyline of StarFox 64, turning its once beautiful oceans into seas of corrosive poison and its atmosphere into a caustic cloud of deadly vapors.
Living/sentient planets
- Petaybee, from the Petaybee Series (Powers series) by Anne McCaffrey and Elizabeth Scarborough
- Gaea, a sentient artificial space habitat, from the Gaea Trilogy (Titan, Wizard & Daemon) by John Varley.
- Zonama Sekot living world from the Star Wars expanded universe.
- Pandarve, from the Storm comic books, is not only alive, but also has the status of a goddess
- Mogo, from the Green Lantern Corps comic books, is not only alive, but also an appointed member of the corps.
Other
- Acheron — aka LV-426 the planet on which the derelict ship and its deadly cargo are found in the movies Alien and Aliens
- Aiur — jungle planet in Starcraft the computer game
- Altair IV — Forbidden Planet formerly inhabited by mysteriously extinct race
- Ahnooie-4 where Spaceman Spiff (Calvin) decides to put a repulsive blob out of its misery
- Arisia — E. E. Smith's Lensmen series
- Ark — Boris and Arkady Strugatsky, Noon Universe
- Arlia — Akira Toriyama's Dragon Ball Z
- Astra — A Marvel Universe planet where humanoid aliens possess magnetic and molecule-controlling powers that enable them to have every power on metal
- Athse — Ursula K. Le Guin's The Word for World is Forest
- Bajor — Star Trek
- Barsoom — Edgar Rice Burroughs, heroic fantasy version of Mars
- Belzagor — Robert Silverberg's Downward to the Earth and into Conrad's Heart of Darkness
- The Blue Sands Planet — Boris and Arkady Strugatsky
- Bog— where Spaceman Spiff (Calvin) avoids pools of toxic chemicals under a choking atmosphere of poisonous gases
- Botany — an Earth-like world portrayed in Anne McCaffrey's Freedom series.
- Boskone — Smith's Lensmen series
- Bothawui — Star Wars cosmopolitan planet of Bothans
- Caladan — House Atreides home planet before being ordered to take up occupancy of Arrakis. Frank Herbert's Dune.
- Calafia — Water world in David Brin's Uplift universe, inhabited by humans and neo-dolphins. Currently occupied by the Soro.
- Caprica — destroyed home planet of the Battlestar Galactica, one of the 12 home worlds
- Corneria — home planet for the Fox Team in the Star Fox video game series
- Covenant — Scottish-ethnic world in Jerry Pournelle's CoDominium Future History. Known for its mercenaries specializing in infantry.
- Centauri Prime — homeworld of the Centauri in the Babylon 5 universe
- Churchill — English-ethnic world in Jerry Pournelle's CoDominium Future History.
- Cyteen — C. J. Cherryh's Cyteen series
- Darkover — Marion Zimmer Bradley's Darkover series (medieval culture and psi powers)
- The Discworld — not quite a planet, as it's flat and supported by giant elephants
- Deemi — World in David Brin's Uplift Universe leased to humans on the condition that they run the Galactic prison. Bathed in UV radiation. Most of biosphere is aquatic.
- Dragon World — the Earth from the anime Dragon Ball, Dragon Ball Z, Dragon Ball GT, Dr. Slump, and Neko Majin Z.
- Dayan or Dyan — Israeli-ethnic world in Jerry Pournelle's CoDominium Future History.
- Epsilon 3 — orbited by Babylon 5
- Expel — where much of the action of Star Ocean: The Second Story occurs
- Exxilon — Doctor Who serial Death to the Daleks
- Fortuna — Planet of the Star Fox video game series; the "dinosaur planet".
- Freeza Planet 79 — Akira Toriyama's Dragon Ball Z
- Frystaat — Afrikaaner-ethnic world in Jerry Pournelle's CoDominium Future History.
- Gallifrey — Doctor Who (main character's home planet)
- Garrota — Boris and Arkady Strugatsky, Noon Universe
- Garissa — Planet in Peter F. Hamilton's Night's Dawn Trilogy that is anti-matter bombed and rendered uninhabitable.
- Gauda Prime — a planet on which the series Blake's 7 comes to an end.
- Giedi Prime — home planet of the Harkonnen Dynasty from Dune
- Giganda — Boris and Arkady Strugatsky, Noon Universe
- Gloob — above which Spaceman Spiff, Calvin from the comic (Calvin and Hobbes), has a malfunction in his hyper freem drive and is blasted with a deadly frap ray by the aliens
- Gorgona — Boris and Arkady Strugatsky
- The Great Kai Planet — Akira Toriyama's Dragon Ball Z
- Harvest — a farm planet in the video game series Halo
- Hegira — Greg Bear
- Helicon — Home of Psychohistory founder, Hari Seldon in Isaac Asimov's Foundation Series
- Hiigara — Homeworld (lost Kushan home planet)
- Homeworld — Scott Westerfeld's Succession Series (Risen Imperial capital)
- Hope — Boris and Arkady Strugatsky, Noon Universe
- Jean — colony planet in the Freefall comic
- Jijo — Planet in Galaxy #4 where Humans and other sophont refugees have illegally hidden, in the case of the G'kek and the Humans to avoid extermination, potential for humanity, certain for G'kek.
- Jobis — A Kiint world with three artificial moons from Peter F. Hamilton's Night's Dawn Trilogy.
- Jophekka — In David Brin's Uplift Universe, the homeworld of the Jophur, sapient and ambitious sap ring stacks.
- Jurai — The seat of the powerful Juraian Empire in the anime Tenchi Muyo.
- Kaitan — Frank Herbert's Dune (home of the Padishah Emperors)
- Kanassa — Akira Toriyama's Dragon Ball Z
- Koosebane — weird planet in The Muppet Show
- Kosmos — A planet in the Marvel Universe from which a criminal sludge-like alien escapes to hide on Earth where he kills The Wasp's father and fights Ant-Man
- Klendathu — bugs homeplanet in Robert A. Heinlein Starship Troopers
- Krypton — Superman
- Lar Metaal — Planet which shifts location in space every 1,000 years. Homeworld of Queen Promethium, Maetel and possibly Emeraldas — Galaxy Express 999, Queen Millenia, Maetel Legend
- Legis XV — location of Scott Westerfeld's Succession Series
- Manhattan, London, Tokyo and Berlin — Freelancer. Most places in this game are named after Earth places, such as the planet Stuttgart, the New York system, or the Detroit asteroid field.
- Leonida — Boris and Arkady Strugatsky, Noon Universe
- Lithia — James Blish's Case of Conscience
- Londinum — Co-capital world (Anglo-American) of the Alliance in Joss Whedon's Firefly universe.
- Lusitania — Orson Scott Card's Speaker for the Dead
- MacBeth — planet from the Star Fox video game series
- Meiji — Japanese-ethnic world in Jerry Pournelle's CoDominium Future History.
- Metaluna — This Island Earth
- Minbar — homeworld of the Minbari in the Babylon 5 universe
- Mok, where Spaceman Spiff (Calvin) undergoes water torture (his mother washes his hair)
- Mondas — home planet of the [[Cyberman