Earl. Jason Lee plays the part of Earl on "My Name Is Earl".

David Letterman. David Letterman's first network TV job was on "Mary", Mary Tyler Moore's variety show.

TD Waterhouse. Sam Waterston, who plays Jack McCoy on "Law & Order", originally replaced Michael Moriarty in 1994.

Jenny Jones. Jenny Jones is now a vocal advocate against breast implants.

Howard. "The Big Bang Theory" character Mrs. Wolowitz was never seen, but voiced by the late Carol Ann Susi.

Homicide Detective. "NCIS" is a spin-off of "JAG".