Trey Parker and Matt Stone's tasteless animated TV series gets the big-screen treatment in this dark, demented and deliriously funny feature-length tale. Stan, Kyle, Cartman and Kenny go on an outing to see Terrance and Phillip's profanity-laced movie, and their resultant change in vocabulary is the catalyst for an escalating bout of moral-guardian madness, culminating in the outbreak of World War Three (well, America versus Canada). For once, here's a sharp, inventive spin-off of a TV show that doesn't pad its plot and waste its widescreen opportunities. The crude, taboo-assaulting story is enjoyably ambitious and the surprisingly tuneful songs cleverly parody everything from Disney to Les Misérables. This is bad taste at its best.

In this feature film based on the hit animated series, the third graders of South Park sneak into an R-rated film by ultra-vulgar Canadian television personalities Terrance and Phillip, and emerge with expanded vocabularies that leave their parents and teachers scandalized. When outraged Americans try to censor the film, the controversy spirals into a call to wage war on Canada and Terrance and Phillip end up on death row, with the kids their only hope of rescue.