Capitalism: A Love Story - Even my liberal self thinks Michael Moore is crazy. However, like most people I also think he is a talented filmmaker. While I think this movie is not even comparable to say Bowling for Columbine or Fahrenheit 9/11, I feel that his massive controversial nature and good reviews make this movie one to watch.
Good Hair - While there has been some backlash against this Chris Rock doc, the overall reception has been warm. While the Academy usually goes after the darker subjects, many may find it hard to resist the good nature, and interesting storytelling of this movie. I think it will still get a Documentary nod, but if its fan base is big, anything can happen.
Michael Jackson's This Is It - While it may have missed the mark for the Documentary category, this movie is getting rave reviews, and definitely still has a shot at making the top ten. Also, in the wake of Jackson's death, he is extremely popular, and many may feel that it is appropriate to give him one final honor. I'd keep an eye out for this one.
Anvil! The Story of Anvil/ The Cove - This earlier release got raving reviews, and while time has passed, I think both of them were pretty popular and have a great shot at at least a Doc nomination. If their fan base is passionate, there may be a push to get these into the bigger category, however, I think the three previously mentioned ones are just a little bit newer, and a little bit more exposed, which is a key in Oscar voting.