When I was younger, I didn't read books, in fact I never read a book until I was in high school. So instead of learning about the world and people around me through books (the best way imo) I learned from movies. I had a few movies that touched me very deeply and allowed me to mature for which I am forever grateful. Since that time (ended when I started reading books) I look back on some of these movies with personal reverence, others with just fondness, and most with just a healthy respect.
Romantic Comedies
When Harry Met Sally
Love Actually
Shallow Hal
Hitch
As Good As it Gets
Drama
Awakenings
Good Will Hunting
Braveheart
The Shawshank Redemption
The Last Samurai
Comedy
Anchorman
Borat
Kiss Kiss Bang Bang
Superbad
Scifi/Fantasy
Spider-Man 2
Lord of The Rings
Abyss
Signs
Solaris
Offbeat
Memento
Primer
*Stranger Than Fiction
Foreign
Crouching Tiger Hidden Dragon
Old Boy
*Infernal Affairs
Animated
Ratatouille
Iron Giant
*newly updated to list