Ones I've not yet seen mentioned:
Megamind
How to Train Your Dragon
Commando (I like comedies)
Das Boot (the TV series, NOT the movie)
Dark Star
Alien and Aliens.
The Outlaw Joesy Wales
A Fistful of Dynamite
I Claudius (TV Series with Derek Jacobi)
Constantine
The Vampires of Havana (it's animated, very much not PG, and you will not stop laughing once. Find a dubbed version, not a subtitled one if your Spanish is bad)
Back to the Future
The first three Indiana Jones movies
Hancock (stupid but fun)
The China Syndrome (message is blah, acting superb)
Catch Me If You Can
The Lady in the Van