I love films, too.
I guess my favorites list would look something like this:
Adaptation.
Amores perros
Apocalypse Now
The Big Lebowski
Blade Runner
Blue Velvet
City of God
The Constant Gardener
Eyes Wide Shut
Fight Club
Lost Highway
Magnolia
Mulholland Dr.
Oldboy
Punch-Drunk Love
Requiem for a Dream
Stranger Than Fiction
Synecdoche, New York
There Will Be Blood
Unbreakable
Wild at Heart
I know, I'm a huge fan of Kaufman, Meirelles, P.T. Anderson and Lynch.
But yeah, you should totally expand your tastes. I recommend Herzog's films, especially Aguirre, the Wrath of God. And check out David Lynch! Start with Blue Velvet. Also, Kubrick films are a must.