Best Actress: This is a big guess, as I didn't see any of the actresses this year, so going with Natalie Portman, Black Swan based on my son Brian's review
Best Actor: Jesse Eisenberg, The Social Network (tough pick over Colin Firth in The King's Speech and Jeff Bridges in True Grit)
Best Picture: The Social Network (True Grit is my second pick)
Rooting for Aaron Sorkin to win for Adapted Screenplay, The Social Network.
Finally, it would be very cool if Exit Through The Gift Shop would win for Best Documentary. One of the most original concepts for a documentary film I have ever seen. He has been invited to the ceremony, and as I understand it, can show up masked to keep his identity a secret.