Mark Harmon stopped by The Tonight Show with Jay Leno, and the two television veterans spent some time reminiscing over shared history.
Both the host and the NCIS actor had brief stints on the comedy Laverne & Shirley in the 1970s, with Harmon popping up in 1976 and Leno visiting in 1979, as well as 1983. When Leno thought he'd surprise Harmon with a blast from his acting past, Harmon countered with a clip of his own.
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