Why Leave It to Beaver Ended Jerry Mathers' Choice Leave It to Beaver (TV Series 1957–1963) 😍🎥 The Cleavers are the 1950's 'All-American Family' in this 'feel-good' family sitcom. Parents Ward and June, and older brother Wally, try to keep Theodore ('the Beaver') out of trouble. However, Beaver continues to end up in one kind of jam or another. Unlike real life, these situations are always easily resolved to the satisfaction of all involved and the Beaver gets off with a few stern moralistic w