"Leave it to Beaver" was a popular family sitcom from 1957 to 1963, and the real identity of "the Beav" is a favorite question among fans of TV trivia. But I was always happy to see Wally's pal, the weaselly Eddie Haskell, come on the scene, a sure sign that mischief was about to be afoot. What was the real name of this actor who first appeared on the show at age 14?