From a pioneering variety show from the black-and-white days to two faves on now -- see our No. 1. To see EW's picks of the top 100 all-time greatest TV shows, click the link at the end to buy this week's magazine, in print or for your tablet.
The best-written, best-acted comedy/variety show in history, this showcase for Sid Caesar's fearless slapstick and endlessly inventive verbal frenzy was the first to perfect a now-lost genre.
Image Credit: Everett Collection