Frank Zappa makes a 1979 appearance on Make Me Laugh, an awful looking game show hosted by Bobby Van. Zappa nearly wordlessly promotes his then new Sheik Yerbouti album and wins a member of the studio audience a lot of consumer items (a garish bed spread, Samsonite luggage, a washer/dryer combo, plush recliner, etc) by not laughing at the idiotic Gallagher and another completely unfunny comic.
A typical celebrity guest on Make Me Laugh would be someone like Dr. Joyce Brothers or Charles Nelson Reilly. You can clearly tell that Frank hated every second of this.