Tell Them Anything You Want: A Portrait of Maurice Sendak (Hulu)
A great, short profile directed by Spike Jonze
Fifty People One Question
"We had an idea. Go to a place. Ask fifty people the same question. Film their responses."
SnagFilms
"Watch free documentaries."
"No End In Sight" by Charles Ferguson
A documentary on the interminable and massive mess that is the Iraq War.
Good Copy Bad Copy
"A documentary about the current state of copyright and culture." It's free, of course.