Vince Vaughn and Owen Wilson are best friends who like to crash weddings. Yes, they show up uninvited, are able to pass themselves off as guests and manage to have a great time at the weddings. Their main aim however is to pick up women. Weddings apparently are good places to meet women.
The story is weak and at times cliched. Vaughn and Owen are not convincing, probably because their characters aren't all that great. There are a couple of funny scenes, but other than that the movie's not that good. When you have a guy like Christopher Walken alongside talented actors like Vaughn and Owen, you expect a bit more. This one disappointed.
This is the kind of movie that most people probably wouldn't mind watching. It'll probably do well here, since people in the theatre did seem to enjoy it.
For me though, it wasn't worth the price of admission. I like a different kind of funny.