South Park - Season 0 Episode 29 : Lil' Rush
Lil' Rush is an exclusive short animation created for the Canadian rock band Rush. The short was shown as the opening to the song "Tom Sawyer" on the band's Snakes & Arrows Tour in 2007. The concert DVD also features the clip.
In the sketch, Cartman sings the song "Tom Sawyer" with incorrect lyrics, confusing Tom Saywer with Huckleberry Finn, leading to an argument with Kyle. As they restart the song, the real Rush takes over during the concert.