Caesar's Hour is a live, hour-long American sketch-comedy television program that aired on NBC from 1954 until 1957. The program starred, among others, Sid Caesar, Nanette Fabray, Carl Reiner, Howard Morris, Janet Blair, and Milt Kamen, and featured a number of cameo roles by famous entertainers such as Joan Crawford and Peggy Lee. From July to September 1956, NBC ran The Ernie Kovacs Show as a summer replacement series for Caesar's Hour.