Trey Parker and Matt Stone celebrate South Park's 25th anniversary with a concert in Colorado, featuring Primus and Ween.

Top Cast

Trey ParkerSelf

Matt StoneSelf

Les ClaypoolSelf (Primus)

Larry LaLondeSelf (Primus)

Tim AlexanderSelf (Primus)

Gene WeenSelf (Ween)

Dean WeenSelf (Ween)

Glenn McClellandSelf (Ween)