I think everyone has a few "that guys" that are their very own. My own personal That Guy is William Fichtner, who was in Crash, the Dark Knight, tons of shit - but every time I see him it's "Hey, that's Sparks, from Grace Under Fire!"
Grace Under Fire was a two season show from 1994 that started Brett Butler. I don't think it even made it to syndication. I haven't seen it since 1997. But goddamnit he's Sparks to me.
will always be that guy that played a number of different completely unrelated villains on xena.
i stumbled across this relevant high quality image in my memery...