Guest Stars Trey Parker voices Mr. Garrison Trey Parker voices Mr. Mackey Mary Kay Bergman voices Sheila Broflovski Mary Kay Bergman voices Liane Cartman Trey Parker voices Clyde Isaac Hayes voices Chef Mary Kay Bergman voices Principal Victoria Trey Parker voices Officer Barbrady Trey Parker voices Tom the News Reader Mary Kay Bergman voices Mrs. Crabtree Trey Parker voices Fosse Mary Kay Bergman voices Nurse Gollum Trey Parker voices Dr. Adams