What are your top Sci-fi horror combo movies?

My top 31 are:

1. The Thing (1982).
2. Aliens
3. Alien
4. The Deadly Spawn (a.k.a. Return of the Aliens).
5. Re-Animator
6. Phantasm
7. Event Horizon
8. Videodrome
9. Scanners
10. The Fly (1986)
11. Them!
12. The Fly (1958)
13. The Blob (1988)
14. Day of the Dead
15. Slither
16. The Blob (1958)
17. Halloween III: Season of the Witch
18. Killer Klowns from Outer Space
19. Bad Taste
20. They Live
21. Critters
22. Critters 2 The Main Course
23. Night of the Creeps
24. The Thing from Another World
25. The Return of the Living Dead
26. Lifeforce
27. The Faculty
28. Evilspeak
29. The Mole People
30. Species
31. Let Sleeping Corpses Lie (a.k.a. Living Dead at The Manchester Morgue
32. Doom
33. From Beyond
34. Invasion of the Body Snatchers (1978)
35. Invasion of the Body Snatchers (1957)
36. The Crazies
37. Night of the Comet.

[crabapple]

Some great choices on there...

I like Nigel Kneale's screenplays a lot...he wrote "Halloween III," and two fine Hammer sci-fi movies he wrote were "Quatermass and the Pit" and "The Abominable Snowman."

[Disease]

What are the sci fi elements to Return of the Living dead?

I can't think of any...

[The Vault of Horror]

Alien
The Thing
Frankenstein
The Fly

[ChronoGrl]

Originally Posted by Jax

My top 31 are:

1. The Thing (1982).
2. Aliens
3. Alien
4. The Deadly Spawn (a.k.a. Return of the Aliens).
5. Re-Animator
6. Phantasm
7. Event Horizon
8. Videodrome
9. Scanners
10. The Fly (1986)
11. Them!
12. The Fly (1958)
13. The Blob (1988)
14. Day of the Dead
15. Slither
16. The Blob (1958)
17. Halloween III: Season of the Witch
18. Killer Klowns from Outer Space
19. Bad Taste
20. They Live
21. Critters
22. Critters 2 The Main Course
23. Night of the Creeps
24. The Thing from Another World
25. The Return of the Living Dead
26. Lifeforce
27. The Faculty
28. Evilspeak
29. The Mole People
30. Species
31. Let Sleeping Corpses Lie (a.k.a. Living Dead at The Manchester Morgue
32. Doom
33. From Beyond
34. Invasion of the Body Snatchers (1978)
35. Invasion of the Body Snatchers (1957)
36. The Crazies
37. Night of the Comet.

It is SO refreshing to see "The Thing From Another World." Everyone always recognizes John Carpenter's but ignores the original... The original scared the HELL out of me when I was younger.

Also:
Invasion of the Body Snatchers (1957) - I wasn't a big fan of the remake, but the original was so incredibly chilling.
Alien
Aliens
Alien IV: Resurrection (NOT a perfect movie, but I honestly enjoyed it)
Event Horizon - SO incredibly underrated, in my opinion

I've never considered Slither a scifi movie... I guess I identify it more as a monster movie (which obviously is in conflict as The Thing, but that's ok)... Same with Killer Klowns.

[The Mothman]

ahhh. a deadly spawn fan.

[crabapple]

There is something to be said for The Deadly Spawn! Unique and bizarre little low-budget wonder.

[The Mothman]

imo one of the best monster in b movie history.