James Cameron's Avatar is screening in lots of cities, including New York and Los Angeles, tonight, so even though distributor 20th Century Fox is enforcing a strict embargo on reviews until Monday, you can expect reactions to start popping up online in a few hours.
Two reviews have already appeared in London, where Avatar was screened yesterday. The London Sun gave the film a breathless rave, although the review reads like it was written by a 13 year-old. The Guardian is much more reserved, saying "The film does not make you feel sick and it is not a disaster."
I'm seeing Avatar Friday morning and hope to post some vague, decidedly non-review thoughts here in the afternoon.