For a guy on TV you may not know, and the first guy I remember producing a boner, Tim Woods (Mr. Wrestling):
http://www.onlineworldofwrestling.com/pictures/m/mrwrestling/04.jpg
He's the one on top applying the pressure -- and may explain some of my sexual appetites! LOL.
For a (somewhat) more famous kind of guy, definitely liked Gary Conway, star of Land of the Giants:
http://farm6.static.flickr.com/5024/5575339484_48bf48fb36.jpg