In Season 8 Episode 18 of Frasier entitled "forgotten but not gone" Frasier is eating with his father after resigning from the wine club. At 17:23 his fork is in his left hand and his knife in the other. Then he switches hands and puts down his knife. At 17:39 the camera goes back to him and the fork is back in his left hand with no time for him to switch hands again!! haha im on a roll!!