Honestly, I hadn't even planned on seeing this movie. It looked horribly degrading to women and has, what I still feel, is a pretty rediculous premise. Two guys in their late twenties, played by Owen Wilson and Vince Vaughn, make it their hobby to fabricate elaborate identities so that they can crash weddings in order to seduce women.
I think it's that the premise is so rediculous that makes the movie so brilliant. The film delivers pretty much nonstop laughs, through a mix of one-liners, slapstick, and crude sexual jokes. For instance, Vaughn's character has to attempt to conceal that the girl sitting next to him is jacking him off under the dinner table while sitting and talking with that girl's entire family.
Wilson and Vaughn both deliver outstanding performances, and Christopher Walken is his typical creepy self as the father of the girls that Wilson and Vaughn have picked as their "victims." Will Ferrel has an amusing cameo as the founder of the "Wedding Crasher Method."
This is by far the funniest movie of the year that I have seen, and is highly entertaining. Go see it if you haven't, and go see it again if you have.