South Park: Bigger, Longer & Uncut is a 1999 American adult animated musical comedy film based on the Comedy Central animated television series South Park. The film was directed by series creator Trey Parker and stars the regular television cast of Parker, Matt Stone, Mary Kay Bergman, and Isaac Hayes, with guest performances by George Clooney, Eric Idle and Mike Judge. The film follows the four boys Stan Marsh, Kyle Broflovski, Eric Cartman, and Kenny McCormick as they sneak into an R-rated film featuring Canadian actors Terrance and Phillip and begin cursing incessantly. Eventually, their mothers pressure the United States to wage war against Canada for allegedly corrupting their children.
The film tackles issues of censorship and bad parenting, and parodies the animated films of the Disney Renaissance as well as musicals such as the West End's Les Misérables, and satirizes the controversy surrounding the show itself. The film also heavily lampoons the Motion Picture Association of America; Parker and Stone battled the MPAA throughout the production process and the film received an R rating just two weeks prior to its release. A writing team consisting of Parker, Stone, and Pam Brady was assembled. They conceived numerous plot ideas, with Parker and Stone's being the one developed into a film. The film features twelve original songs by Parker and Marc Shaiman, with additional lyrics by Stone.
The film was released in theaters on June 30, 1999 and on home video on November 23, 1999. Produced on a $21 million budget, it went on to gross $83.1 million worldwide, making it the highest-grossing R-rated animated film of all time, until it was surpassed by Sausage Party in 2016. The song "Blame Canada" earned Parker and Shaiman a nomination for Academy Award for Best Original Song at the 72nd Academy Awards.