Trey Parker (Piano Mover / Timmy / Customers / Dr. Doctor / Mr. Mackey / Mr. Garrison / School Board Member #2 / School Board Member #1 / Eric Cartman / Stan Marsh), Matt Stone (Publisher / Customers / Butters / Kenny McCormick / Kyle Broflovski), Eliza Schneider (Customer / Liane Cartman / Woman #2 / Miss Information / Sharon Marsh / Principal Victoria / Wendy Testaburger), Debi Derryberry (Miss Information), Bruce Howell (Mr. Wyland), Mona Marshall (Woman #1 / Miss Information / Sheila Broflovski), Isaac Hayes (Chef), Tommy Chong (Chief Running Pinto), Cheech Marin (Carlos Ramirez), Omaira Coromoto Rivero (Sharon Marsh (Spanish Dubbing))