Angel Bob comes to offer ALF a new life.
Bob is the name of an angel. Gordon is surprised to see Bob when no one else can, and is somewhat puzzled that his guardian angel is not a Melmacian. After convincing Gordon he is an angel, Bob grants ALF's request for a new life. He previews this new life in an "It's a Wonderful Life" manner. In the end, ALF decides that he doesn't want a new life and wants everything to go back to normal. (Episode: "Stairway to Heaven")