In the 1970s, after McDonald's introduced Ronald but before Wendy's introduced the elderly "Where's the Beef?" lady, the Jack in the Box fast-food chain featured commercials with a cherubic Rodney Allen Rippy, no more than 4, attempting to bite into a Jumbo Jack. "It's too big to eat!" says the tot, barely distinguishable because of the food in his mouth. (See commercial in video below.) How famous did cute little Rodney become? Enough for Tonight Show host Johnny Carson to mention him in monologues. Enough for Michael Jackson, who was 10 years Rodney's senior, to befriend him at the time. Cut to 40 years later,...