What shows have seen guest appearances by the actor who played the voice of Hamm in "Toy Story"?
Cliff Clavin: Clifford C. "Cliff" Clavin, Jr. (born 1947 or 1949), is a fictional character on the American television show "Cheers" co-created (and played) by John Ratzenberger. Cliff Clavin:  The actor made guest appearances as Cliff on "St. Elsewhere", "Wings" and "Frasier". John Ratzenberger: John Dezso Ratzenberger (born April 6, 1947) is an American actor, voice actor, and entrepreneur. John Ratzenberger:  He is also known for his extensive vocal work in Pixar Animation Studios' films, notably Hamm in the "Toy Story" franchise and Mack in the "Cars" franchise.
"St. Elsewhere", "Wings" and "Frasier"