Ai Weiwei: Never Sorry, The Imposter, and Searching for Sugar Man have had impressive earnings at the box office recently, which begs the question: could these have been big box office contenders with a larger distribution and marketing campaign?

A preview of documentaries from the 2012 Tribeca Film Festival slate.

Tom Roston recaps the Midwestern film festival True/False, where he saw a slate of inspiring documentaries including How to Survive a Plague, The Imposter, Bully, Searching for Sugar Man and Undefeated.

Any documentary filmmaker will tell you that getting a film into Sundance is a Herculean achievement in itself, but some also come away with an award. Check out a rundown of the 13 prizes given to documentaries at this year's festival.