South Park season 4

The fourth season of South Park, an American animated television series created by Trey Parker and Matt Stone, began airing on April 5, 2000. The fourth season concluded after airing 17 episodes on December 20, 2000.

The first four episodes in this season have the year 2000 at the end of their episode titles. As explained in the FAQ section on the official website: "When the year 2000 was coming up, everyone and their brother had '2000' in the titles of their products and TV shows. America was obsessed with 2000, so Trey Parker put '2000' in the titles to make fun of the ubiquity of the phrase."

This is the first season not to feature Mary Kay Bergman as a series regular, who provided many of the female voices on the show (Bergman died by suicide on November 11, 1999). It also marks the only whole season to be animated with their old software PowerAnimator before switching to Maya. Eliza Schneider and Mona Marshall replaced Mary Kay Bergman in season four after her death.

Voice cast
This is the first season to feature Eliza Schneider and Mona Marshall as series regulars, who would go on to provide many of the female voices on the show. They replaced Mary Kay Bergman, who died on November 11, 1999.

Main cast

 * Trey Parker as Stan Marsh, Eric Cartman, Randy Marsh, Mr. Garrison, Clyde Donovan, Mr. Hankey, Mr. Mackey, Stephen Stotch, Timmy Burch and Phillip
 * Matt Stone as Kyle Broflovski, Kenny McCormick, Butters Stotch, Gerald Broflovski, Stuart McCormick, Pip Pirrup, Craig Tucker, Jimbo Kern, Terrance and Jesus
 * Eliza Schneider as Liane Cartman, Shelly Marsh, Sharon Marsh, Mayor McDaniels, Carol McCormick, Wendy Testaburger, Principal Victoria and Ms. Crabtree
 * Mona Marshall as Sheila Broflovski and Linda Stotch
 * Isaac Hayes as Chef

Guest cast

 * Richard Belzer as Loogie ("The Tooth Fairy's Tats 2000")
 * Cheech Marin as Carlos Ramirez ("Cherokee Hair Tampons")
 * Tommy Chong as Chief Running Pinto ("Cherokee Hair Tampons")
 * Dian Bachar as Chris ("Do the Handicapped Go to Hell?" and "Probably")
 * Malcolm McDowell as narrator ("Pip")
 * Louis Price as Cornwallis's singing voice ("A Very Crappy Christmas")