As a fan of South Park, I freaking love this movie. I remember when my sister took me and all my friends to go see the movie back in 1999. It was one of the best animated movies of the 1990's in my opinion. I remember singing the songs out loud and so did my friends.
I love the soundtrack too. My favorite songs were (are) Uncle Fucka, Blame Canada and Kyle's Mom is a Bitch.