Fans cannot legally watch season four episodes of "The Muppet Show" anywhere. Fans have been able to purchase the first three seasons on DVD since May 2008. Although producers announced season four's anticipated release in 2009, the season has not been released on DVD as of September 2015.
"The Muppet Show," which aired from Sept. 5, 1976 until March 15, 1981, included 120 episodes in its five seasons. The program features a vaudeville song-and-dance style show with Kermit the Frog as the master of ceremonies. Kermit tries to control the other Muppets and keep the guest stars happy while avoiding Miss Piggy's romantic advances. He also contends with homicidal chefs, crabby theater patrons and stray livestock. Jack Parnell and his orchestra provided the program's music. Creator Jim Henson provided the voice for Kermit the Frog. Frank Oz was the voice for Fozzie Bear and Dave Goelz was the voice of Gonzo.
Featured guest stars in season four of "The Muppet Show" include John Denver, Kenny Rogers, Dudley Moore, Liza Minnelli and Christopher Reeve. The "Star Wars" cast appeared in episode 17, including Mark Hamill, Peter Mayhew, Anthony Daniels and Kenny Baker. In this episode, Kermit books Angus McGonagle, the argyle gargoyle who gargles Gershwin, as the guest star, but Luke Skywalker, C-3PO, and R2D2 burst onto the stage looking for Chewbacca.