Actions (some with a bit of sci-fi taste):
Casino Royale
The Island (import from UK)
Layer Cake
Mission Impossible 3
Aeon Flux
Assuming you are interested in sci-fis without a lot of action, the following are good too:
A Scanner Darkly
The Fountain
Not sure if war movies count as actions:
Black Hawk Down
Kingdom of Heaven
As far as beautiful, vibrant colors go...this one's got tons of bright colors and has even a little alien invasion:
Chicken Little
enjoy
gandalf
