Kenny had a major role in '' South Park : Bigger , Longer & Uncut '' , the full-length film based on the series , and appeared on the film 's soundtrack singing ( albeit muffled ) several lines of the song " Mountain Town " from the film . As a tribute to the Dead Parrot sketch , a short that features Kenny as a " dead friend " being returned by Cartman to a shop run by Kyle aired during a 1999 BBC television special commemorating the 30th anniversary of '' Monty Python 's Flying Circus '' . Kenny was also featured in the documentary film '' The Aristocrats '' , listening to Cartman tell his version of the film 's titular joke , and in " The Gauntlet " , a short spoofing both '' Gladiator '' and '' Battlefield Earth '' that aired during the 2000 MTV Movie Awards
2000 MTV Movie Awards
2000 MTV Movie Awards
Kenny McCormick