Saturday Night Live will certainly rule in this area as probably the top producer of skits / sketches that became movies.
But I'll kick it off with The Honeymooners - it began as one skit of several on The Cavalcade of Stars hosted by Jackie Gleason, and later on the The Jackie Gleason Show before it became its own half-hour long sitcom on TV in 1955.
Although the show had many homages and reunions on TV, it was not made into a movie until 2005 when the title hit the big screen with black actors filling the lead roles.
But I'll kick it off with The Honeymooners - it began as one skit of several on The Cavalcade of Stars hosted by Jackie Gleason, and later on the The Jackie Gleason Show before it became its own half-hour long sitcom on TV in 1955.
Although the show had many homages and reunions on TV, it was not made into a movie until 2005 when the title hit the big screen with black actors filling the lead roles.