Ok, here are ten, in no particular order:
Monty Python And The Holy Grail
Life Of Brian
The Meaning Of Life
Jabberwocky
The Lord Of The Rings I, II & III (extended versions)
The Life Aquatic with Steve Zissou
Gladiator
The Ninth Configuration
A Clockwork Orange
2001 A Space Odyssey
Yes, I know, The Lord Of The Rings is actually three movies, but I'm counting them as one because they tell one complete story.