After avoiding a Romulan ambush by three of their warships, the U.S.S. Enterprise enters a strange energy cloud. The gaseous cloud affects the ship's computer turning it insane. With the crew at the mercy of the Enterprise's computer, it indulges in a series of increasingly aggressive practical jokes.false2020-11-23 02:15:52The Practical JokerThe Practical JokerHal SutherlandChuck MenvilleChuck Menville7.61974TV-PGtt083242611877620ActionAdventureAnimation/config/metadata/library/c4/c4575a9d7467bace794a29fd836a55b2/poster.jpgfalse0false01216.005465Norm PrescottRomulan Commander (voice) (uncredited)GuestStar507Star Trek321974-09-21