What's the best documentary of 2013? We're tracking festivals, critics, blogs, award shows and more to determine the top docs of the year.

Part 1 of 2: Tom Roston interviews Sundance Film Festival Senior Programmers David Courier and Caroline Libresco about documentaries to watch out for at this year's festival, which begins today.

Tom Roston spells out why 'Fire in the Blood' should be on everyone's must-see doc list at Sundance this year.