Desperate for plotlines as its fifth season winds down, NBC's Just Shoot Me resorted to the time-honored Wizard Of Oz-themed fantasy episode Thursday. 'David [Spade] gets hit over the head, and when he wakes up, he's in Oz,' head writer Alex Cohen said. 'Laura [San Giacomo] is The Tin Man, George [Segal] is the Cowardly Lion, Wendie [Malick] is the Scarecrow, and Davidhere's the best partis Dorothy.' Cohen said plans are already in the works for a late-December It's A Wonderful Life fantasy episode. 