Years before “The Larry Sanders Show“ came this Canadian-made sitcom taking place behind the scenes of the fictional “David Steinberg Show,“ starring real-life comic David Steinberg. Like the later Garry Shandling series, the show alternates between backstage antics and big-name guest stars on stage. The series is best remembered for co-starring many later comic powerhouses such as John Candy, Martin Short and Dave Thomas, years before they did “SCTV.“