What's the deal with documentary trailers? Tom Roston considers some of the best and most disappointing doc trailers he's seen and wonders if they're a marketing tool finally on the upswing in the documentary world.

Find out what films made it to the top of Doc Soup Man's list this year! These films pushed the boundaries of the form and helped take documentary storytelling to a whole new level.

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.

Doc Soup Man Tom Roston argues for a need to define and establish a canon for hybrid documentaries, which include the recent Stories We Tell, The Act of Killing and The Summit.

The Summit, a hybrid depiction of the disastrous climb, in 2008, of the K2 mountain in the Himalayas, will be released in theaters throughout the United States starting October 4, 2013.

Part 2 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.