South Park - Season 2 - Eps 11: Roger Ebert Should Lay Off the Fatty Foods
The kids go on a field trip to the planetarium. All of the children except Cartman are acting weird. As usual Stan and Kyle, with Kenny's sacrifice, try to get to bottom of the mystery. Meanwhile, Cartman wins an appearance on a snack commercial. The four boys get to the root of the strange planetarium.
About South Park

Title: South Park
First Air Date: 1997-08-13
Last Air Date: 2023-03-29
Status: Returning Series
Rating: 8.37/10 (from 4508 votes)
Language: EN
Seasons: 28
Total Episodes: 322
Network: Comedy Central
Genres: Animation, Comedy
Production Companies: South Park Studios, Comedy Central, Parker-Stone Productions, MTV Entertainment Studios
Synopsis
Follows the misadventures of four irreverent grade-schoolers in the quiet, dysfunctional town of South Park, Colorado.
Cast

Trey Parker
Eric Cartman / Stan Marsh (voice)

Matt Stone
Kyle Broflovski / Kenny McCormick (voice)

Mona Marshall
Sheila Broflovski (voice)

Jennifer Howell
Bebe Stevens (voice)