1. Arrakis
Dune
2. Planet LV-426
Alien
3. Hoth
Star Wars
4. Pandora
Avatar
5. Vulcan
Star Trek
6. Altair IV
Forbidden Planet
7. Krypton
Superman
8. Tatooine
Star Wars
9. Planet M6-117 (Hades)
Pitch Black
10. Crematoria
The Chronicles of Riddick
11. Lythion
Barbarella
12. Gallifrey
Dr Who
http://techland.time.com/arrakis-dune/m6-117-hades-pitch-black/
http://blogs.discovermagazine.com/sciencenotfiction/2008/08/15/10-best-science-fiction-planets/