When was the last time you watched Combat (w/Vic Morrow)? I rewatched all 5 seasons this past year and was utterly amazed at how many Trek actors did that show as well... from Balance of Power's Decius to the old man in The Deadly Years. Nimoy played prominently in a couple of episodes. And if you can avoid blinking, you'll see Walter Koenig with Shecky Greene. Etc, etc, etc. It's like watching a series of Star Trek pre-reunions! (..and how many times have you seen a "pre-reunion?!?" Should I trademark that word? *grin*)