I promised that I'd tell you all about "That Guy" (If you don't recall, please refer to the TOTD section of the post from a couple days ago.)

So what is "That Guy?"
"That Guy" originally referred to any incident on TV or film where you find yourself watching a movie or show and you are confronted with an actor/actress who seems to be in everything. The actor/actress in question usually inhabits some small role, (supporting characters, cameo appearances, etc... the stuff these folks gotta do to pay the bills.) and while you can place them in other roles, you can't actually NAME them. Thus these actors/actresses are referred to as "That Guy" as in "You know, THAT GUY, from Shawshank Redemption..." or "Oh, hey, isn't that THAT GUY from that one John Cusack movie?"

"That Guys" are often referred to by their better-known co-stars. And some of the "That Guys" have become so legendary as to make it into the "That Guy Hall of Fame." But of course since it's full of all those actors we just can't name, the list of inductees isn't available... and even if I did give you names, the "That guys" aren't big enough that you'd really recognize them by name only anyway. You get the idea.