In the series' 100th episode, a chubby ALF decides to go on a crash diet. Unfortunately, the abrupt change in metabolism has a Jekyll-Hyde effect on the hapless alien. Before long, he has reverted to a wolflike form (or, in his words, "a primitive Melmaccian hunting machine"), terrorizing a local park during his nocturnal forays for food. ~ Hal Erickson, Rovi
