Hey man, you did the leg-work. I didn’t think of posting over there. Is there a message board? Would you mind sharing the link?
When I read your description I knew exactly who you were talking about, but had no idea how to find out his name. I’m glad it got figured out, it was driving me nuts. 
Here ya go:
http://us.imdb.com/board/bd0000001/threads/
You got a question about “What movie was this scene in?” or “Who was this actor?”. . . This is the place to go. Some of the stuff the experts on that board can decipher with the skimpiest of evidence will lead your head spinning. Trust me, as someone who has gotten some dead-on answers from some skimpy information.
Wait a minute. I thought we knew everything, on this board.