He was Marc Alaimo, and the series was The Incredible Hulk.. he did only a few episodes, but of course I could not post a picture of bill bixby, you'll all agree..
he is Nimoy, yes, but it's not mission impossible.. I'm afraid this time too I posted an image of someone who was not in the regular cast (as he was in mission impossible). I just thought that there has been so many reruns that maybe someone could recognise it anyway