The 8 finalists (of 12?) listed in the article are:
Super Size Me
Born Into Brothels
Home of the Brave
Howard Zinn: You Can't Be Neutral on a Moving Train
In the Realms of the Unreal: The Mystery of Henry Darger
Riding Giants
Touching the Void
Tupac: Resurrection
From another source I found:
The Story of the Weeping Camel
Keeping it semi-real for Oscars (fictionalized stories -how do they qualify as documentaries)