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Cybill Shepherd committed a major faux pas on the Today show this morning. While discussing her role in tonight's Martha Stewart telepic (9-11 pm/ET on NBC), the Moonlighting grad couldn't seem to recall who authored Martha Inc. the book on which the telepic was based! (Shepherd has said the tell-all was an invaluable resource in understanding Martha). "Is it Christopher Byron or Byron Christopher?" Katie Couric quizzed Shepherd, who replied: "I don't know." D'oh!