William Shatner, was of course, Captain Kirk on the original "Star Trek" television series and in the first seven feature films. He also starred as Jeff Cable in "The Barbary Coast" and in the title role of "T.J. Hooker."
Robert F. Simon was an army general in the first season of "M*A*S*H" and also starred as editor Jonah Jamison in the live-action adventure series "Spider-Man."
Mariclare Costello was the schoolteacher on "The Waltons," and co-starred with Zohra Lampert in the thriller "Let's Scare Jessica to Death."