The Itchy & Scratchy Show is a fictional animated television series which is featured in the animated television series The Simpsons. It usually appears as a part of The Krusty the Clown Show, watched regularly by Bart and Lisa Simpson. Itself an animated cartoon, The Itchy & Scratchy Show depicts an anthropomorphic blue mouse, Itchy, who repeatedly kills an anthropomorphic black cat, Scratchy. The cartoon first appeared in the Tracey Ullman Show short "The Bart Simpson Show," which originally aired November 20, 1988. The cartoon's first appearance in The Simpsons was in the 1990 episode "There's No Disgrace Like Home." Typically presented as 15-to-60-second-long cartoons, the show is filled with over-the-top violence. The Simpsons also occasionally features characters who are involved with the production of The Itchy & Scratchy Show, including Roger Meyers, Jr., who runs the studio and produces the show. Itchy and Scratchy are based on the cartoons Tom and Jerry and Herman and Katnip, and their names were inspired by "Pixie and Dixie," who were mice on the cartoon show Pixie and Dixie and Mr. Jinks. The cartoons have since become popular among the show's writers and animators and are often added when an episode needs expanding. As the shorts became popular with fans, the writers decided to have full episodes that centered around the production of The Itchy & Scratchy Show and featured multiple shorts. The first was "Itchy & Scratchy & Marge", which was a commentary on censorship. Other episodes to feature the show include "Itchy & Scratchy: The Movie", "The Front", "Itchy & Scratchy Land", "The Day the Violence Died" and "The Itchy & Scratchy & Poochie Show".