Oh...my...god....this was one of the funniest comedies I have seen in a long time. Believability aside (and of course, you have to suspend belief for a movie like this), the movie was well written, well cast, and very well acted.
Some things were completely predictable, but who cares? It was entertaining from start to finish, with one of the most hilarious chase scenes I have ever seen. We were all laughing our asses off watching this movie, and I cannot wait to see it again.