Zero Dark Thirty will likely be the odds on favorite to win Best Picture, and be the top movie on many critic lists.
http://www.rottentomatoes.com/m/zero_dark_thirty/
100% rating with a 9.0 average, which is very high comparatively (The Hurt Locker for example only received an 8.4).
Hopefully it will be easy to find in theaters on the 19th, as moves such as these don't really get a wide release until they are closer to Oscar season. But with the praise this one is receiving I don't think the producers will hold it back.