Saturday Night Live
5
For a brief shinning moment the show was actually produced for its own merits as a weekly presentation of farce and satire, slipped into a time slot that had previously been considered television's dead zone. They would try anything and get away with stuff that was nowhere else on the dial, back when TV's still had dials.
After about 5 years it became more of a comedy university training a generation of movie comedians for stardom in Hollywood. It eventually became a community college level vocational school, then a poorly run highschool improv club and is now the equivalent of the sort of regional "Legends of Comedy Dinner Theatre" type thing. I hear next year the show is relocating to Branson Missouri and running on alternate nights with Mac Davis and Bobby Goldsboro.