Well can't absolute favs, but watch often.
In no order save as they come to mind.
Shawshank
Blade Runner (final cut is the best)
Rock & Rule
Hamlet (Kenneth Branagh)
The Quiet Man
2001: A Space Odyssey (epic sci-fi)
Jaws (a bit cheesy, but when I first saw it as a boy, was afraid of the swimming pool.)
The Bourne trilogy (Identity is the best)
All Pixar films
The Blues Brothers
Monty Python and the Holy Grail (Run away, run away!)
Mother Night
I must agree that The Seven Samurai is an epic film.
Snatch is a great film as well, showed it to my girlfriend at the time, her mother, and her mother's boyfriend. They didn't understand it.