In the first-season opener of NBC's ALF, audiences are introduced to the Tanner family and their unexpected and furry guest, ALF, a wise-cracking, cat-eating, mischievous space alien who has crash-landed into the family's garage. Keeping him secret from the military, who they fear will harm the little guy, the Tanners decide to let ALF move in with them. ~ Matthew Tobey, Rovi