Question: Harry Shearer  show called the Itchy & Scratch Show, aired on what program?

<P0-S0>  It usually appears as a part of "The Krusty the Clown Show", watched regularly by Bart Simpson and Lisa Simpson. <P0-S1>  Itself an animated cartoon, "The Itchy & Scratchy Show" depicts a sadistic anthropomorphic blue mouse, Itchy (voiced by Dan Castellaneta), who repeatedly maims and kills an anthropomorphic, hapless threadbare black cat, Scratchy (voiced by Harry Shearer). <P0-S2>  The cartoon first appeared in "The Tracey Ullman Show" short "The Bart Simpson Show", which originally aired November 20, 1988. <P0-S3>  The cartoon's first appearance in "The Simpsons" was in the 1990 episode "There's No Disgrace Like Home". <P0-S4>  Typically presented as 15-to-60-second-long cartoons, the show is filled with gratuitous violence. <P0-S5> The Itchy & Scratchy Show (often shortened as Itchy & Scratchy) is a running gag and fictional animated television series featured in the American animated television series "The Simpsons". <P0-S6>  "The Simpsons" also occasionally features characters who are involved with the production of "The Itchy & Scratchy Show", including Roger Meyers Jr. (voiced by Alex Rocco, and, later, Hank Azaria), who runs the studio and produces the show. <SEP> <P1-S0> Return to the Pit (RttP) is a death metal, hardcore, black metal, grindcore, and aggressive/loud rock radio show on 91.3 FM WUNH, Durham, New Hampshire. <P1-S1>  The show first aired on September 2, 1996. <P1-S2>  The host, Rev. Aaron Michael Pepelis, started the show following a former WUNH show called "the Pit" (circa 1990-1996), which was following in the footsteps of an even earlier show called "Metal Storm" from the 80's. <P1-S3>  The name, Return to the Pit, started as a joke which just stuck. <P1-S4>  Twenty years later, RttP expanded into the digital age with a webpage, strong e-community, concert photography, livestream, podcast, and more. <SEP> <P2-S0> "The Itchy & Scratchy & Poochie Show" is the fourteenth episode in the eighth season of the American animated television series "The Simpsons". <P2-S1>  It originally aired on the Fox network in the United States on February 9, 1997. <P2-S2>  In the episode, "The Itchy & Scratchy Show" attempts to regain viewers by introducing a new character named Poochie, whose voice is provided by Homer. <P2-S3>  The episode is largely self-referential and satirizes the world of television production, fans of "The Simpsons", and the series itself. <P2-S4>  It was written by David X. Cohen and directed by Steven Dean Moore. <P2-S5>  Alex Rocco is a credited guest voice as Roger Meyers, Jr. for the third and final time (having previously provided the character's voice in "Itchy & Scratchy & Marge" and "The Day the Violence Died"); Phil Hartman also guest stars as Troy McClure. <P2-S6>  Poochie would become a minor recurring character and Comic Book Guy's catchphrase, "Worst episode ever", is introduced in this episode. <P2-S7>  With "The Itchy & Scratchy & Poochie Show", the show's 167th episode, "The Simpsons" surpassed "The Flintstones" in the number of episodes produced for a prime-time animated series. <SEP> <P3-S0>  From 1969 to 1976, Shearer was a member of The Credibility Gap, a radio comedy group. <P3-S1> Harry Julius Shearer (born December 23, 1943) is an American actor, voice actor, comedian, writer, musician, author, radio host, director and producer. <P3-S2>  He is known for his long-running roles on "The Simpsons", his work on "Saturday Night Live", the comedy band Spinal Tap and his radio program "Le Show". <P3-S3>  Born in Los Angeles, California, Shearer began his career as a child actor. <P3-S4>  Following the breakup of the group, Shearer co-wrote the film "Real Life" with Albert Brooks and started writing for Martin Mull's television series "Fernwood 2 Night".