Check it out here. I've seen about half of the movies on the list. It helps that the EW writers seem to like Sam Rockwell almost as much as I do. Below are my favorites from their list:
Fish Tank (2009). 15-year-old Mia lives in the Essex projects with her single-mom and sister. Mia has a tough life, her mother pretty much ignores her and the only person who seems to take an interest in her is her mom's boyfriend Connor. Media Corner favorite Michael Fassbender is in it!
George Washington (2000). If you are only familiar with director David Gordon Green's recent work, including Your Highness and Pineapple Express, this movie will definitely surprise you. This is Green in his arty, serious, Malickian mode. George Washington is also Paul Schneider's film debut.
Ghost Dog: The Way of the Samurai (1999). Jim Jarmusch's film about a professional killer (played by Forest Whitaker) who follows a strict samurai code of ethics. RZA from the Wu-Tang Clan did the score fore the movie and even makes a brief cameo!
Moon (2009). Sam Bell (Sam Rockwell) is nearing the end of his time of a solo three-year stint on a lunar mine. However, he starting to have health problems and strange hallucinations. After a bad accident, Sam discovers something unnerving about his mission on the moon.
My Summer of Love (2004). This film shows how the friendship between two girls, working class Mona (Nathalie Press) and wealthy Tasmin (Emily Blunt), evolves over the course of one summer.
Safe Men (1998). An outrageous comedy that has one of the best casts ever: Paul Giamatti, Steve Zahn, Sam Rockwell and Mark Ruffalo are all in it!