I better go update my Netflix information
Seriously though.... 30 is a number that takes just a little too much effort.... I'll do 5 (not that I wouldn't take the 30 if I could)
No particular order....
Brazil
2001
Godfather
Caddyshack (need a good laugh when you're on Mars!)
Das Boot
I'm sure there are others, but that's what came to me
