Television sketch comedy is having a bit of a moment. Key & Peele just scored their first movie deal, the Mr. Show team is collaborating for a much-ballyhooed non-reunion, the unlikely hit Portlandia just wrapped a fifth season, Kids in the Hall will be touring America this May and more than 23 million people watched the Saturday Night Live 40th anniversary special. 

Here's our list of the 40 greatest sketch comedy shows of all time, dating back to the 1950 premiere of Your Show of Shows to four shows that still have new episodes ahead.