Documentary: Jesus Camp, Jiro Dreams of Sushi
I've made a vow to myself to never watch a documentary with any sort of stance involved (Bowling for Columbine, Super Size Me) because a documentary can make you believe anything they want you to believe. The only docs I'll ever watch are ones only meant to inform and are as "fly on the wall" as possible. Both of these docs that I suggested are incredibly hands off.
Also this:
http://topdocumentaryfilms.com/
@OP
"In Bruges" - fantastic crime drama/black comedy. It's in my top 10 movies of all time.
"Oldboy" - Korean detective noir. Top 5 all time.
If you like crime I'd start looking up the best of the best classic film noirs. I know Chinatown is on netflix instant. Winter's Bone (2010) is a modern noir that breaks the noir formula by using a female protagonist. It was also nominated for best film, best adapted screen play, best female lead, and best male support.