With the caveats that I have not yet seen The Wrestler, and that some of these movies were released on DVD in 2008, but in theaters in 2007, here (in alphabetical order) are the movies I most enjoyed in 2008:
The Dark Knight
Hellboy 2
I’m not there
Into the wild
Iron Man
Milk
Paranoid Park
Quantum of Solace
Sukiyaki Western Django
War, Inc.