Awesome first half, horrid second half. Possible spoilers.

Rating: Null/10 (27 June 2002)

What a huge disappointment this one was! Although I'm not a die-hard fan, I enjoy South Park on occasion; it's different from other cartoons. I like listening to Stan Marsh's voice, for an eight year-old, his voice is breaking early. However, Trey Parker and Matt Stone have always disrespected their audience by disappointing them frequently with their quirks, and this film suffer because of it.
SP:BLU features the four boys (Stan, Kenny, Kyle, and Cartman) going to see Terrence And Phillip's R-rated movie. After seeing the film, they come out spewing unedited profanities and using them on everyone, including Kyle's mother. Mrs. Broslofski decides to start a movement to ban all things Canadian (Terrence and Phillip, despite British accents, are Canadians). When the Canadians answer by blowing up the house where Baldwin actors live, the Americans invade Canada so they can capture Terrence and Phillip and execute them. However, there's a catch. For some reason, if Terrence and Phillip die, it will allow Satan to take over the world. While he waits, we see Satan's crisis with his lover Saddam Hussein (who's also Canadian, go figure). Satan wants to see other guys and Hussein will have none of it.
Until they start invading Canada, this film is hilariously funny, with great songs and "colourful" language. It's a dream come true for those who want an unedited "South Park". From the invasion on, the film is woefully unfunny, with pointless scenes like the USO Party before the execution and the recon mission to save Terrence and Phillip.
If there's a good thing, Stone and Parker keeps the animation the same, with cardboard paper cutouts, so purists will be happy. Yet again, they allow their indulging in infuriating their fans get in the way. If the whole movie was as funny as the first half, this would have been the funniest animated movie ever. Ultimately, it's just another example of Matt and Trey's arrogance. Still, check it out for the first half, then decide if the second half is a huge step down.