S1E53 — Mary Tyler Moore, Jackson Browne, Rita Rudner
Late Show with David Letterman — Season 1, Episode 53.
Mary Tyler Moore treats Late Show viewers to a video clip of Dave from her 1978 variety show, ""Mary,"" in which she smashes a grapefruit in Dave's face. Also, Dave, Biff, Gaines, Anton and Laurie Diamond get their teeth cleaned.
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