Wow, I think all of my favorites have been hit, and I have a lot of favorites.
Was Gattaca mentioned?
Inception was interesting.
District 9 was cool in many ways.
Donnie Darko
How about Iron Man or The Avengers? :D
Hunger Games? I guess I wasn’t totally impressed with that one, but it’s sci-fi. Some classic elements in it.
I’m not a big fan of Avatar, but you’ve got to admit it has some serious sci-fi magnitude to it.
Eternal Sunshine of the Spotless Mind was a interesting sci-fi twist.
Watchmen, an alternate universe of Earth. I found it interesting, though seriously flawed.
A Clockwork Orange.
Robocop.
That’s all I can think of at the moment.
Gattica and Inception were quite good. Avatar lost me with “unobtainium”.