On both Technorati, and in the media. 'Junk, but good junk' was the review I heard on CNBC. The guy seemed to be saying that if you know not to take it seriously, that you'll have a good time with it. He described the showing he went to as 'a party'.
I think this short review says it all: "Yes, it's dumb. Incredibly dumb. It's also a hell of a lot of fun if you just turn your brain off and watch.".
Here's another comment:"Now I'm reading the reviews from last night with mad envy. Multiple standing ovations? In the middle of the movie?!"
And of course, the review we've all been waiting for, from Brian at Snakes on a Blog. As he said, the comments say it all, everyone loved it.
Again, this has become a meme. It's become the cool thing to see this movie, right now. Without these months of build-up, this movie bombs because everyone takes it seriously. But New Line steps in, lets the community runs with it, and the community is smart enough to make a party out of it.
UPDATE: CK adds an opening night review.
Nother UPDATE: Chris adds that SoaP director Dave Ellis stopped by Snakes on a Blog to personally thank all the fans for making the movie a phenomenon. Again, brilliant. And I have no idea why more companies don't do this because it took Ellis all of probably 30 seconds to leave that one comment, but read for yourself how much goodwill he got back from the fans.
PS: I've dropped anonymous comments. I simply got sick of deleting spam from anonymous jackasses. So let me know if anyone has any problems trying to leave comments, you shouldn't from what I can tell, but as we all know, what I can tell ain't much.