It's Garry Shandling's Show. (1986–1990)
Complete DVD release promoted verbally during interview with Garry Shandling, no clips.
Title is referenced
Jimmy comments on Garry Shandling's series, and sings the theme song
Judd Apatow mentions Garry Shandling's series
clips from this show are used in this special
It's discussed in the 1988 episode.
Shandling spoofs himself talking to the camera during sketches