Wow... Trey Parker and Matt Stone (mostly Trey Parker, Stone is a lackey) have done some insane things on South Park. This was the first movie that I've seen not rated until less then a week from it's release. There's a good reason why too.
This movie is gross, raunchy, disgusting, rude, crude, and hilarious... The movie isn't non stop funny, but when you luagh, you laugh pretty hard (or I did anyway).
Some people will hate this movie (DVD is out tomarrow). It will be to much to handle. However, those who expect to see what Trey Parker and Matt Stone's sick minds are capable of will love it.
I remember the big issue with the MPAA (besides being douche bags) was the puppet sex scene. You would think it's not a big deal. They're just puppets... You're wrong. It's one of the oddest, gross and funniest scenes (if you take it in context) I've ever seen. I won't ruin it with spoilers, but try to imagine some sick things (only one quick scene really, but overall funny).
I give it a 3.5/5. It's very solid and I like it, but it has a good amount of political humor (like American Dad, except this owns American dad) and spoofs action movies. If you like South Park, you'll like the drawn out humor (when they focus on one thing, and use every joke possible until the scene is dead) but it maybe a bit over the top in the odd/gross areas. I really liked the idea of using puppets. It gave a cool feel to the movie. Also, all the songs are preformed by Parkers band (D.V.D.A.) and they have some funny songs. "America, **** YEAH!"