Check out this blog...there is a feature every Monday called "I Know That Dude" that features a different random character actor whose face you know right when you see it, but whose name and body of work you struggle to recognize. The most recent "dude" is Robert Davi - the evil Fratelli brother from The Goonies. Further down the page a bit on William Fichtner...great stuff.
The front page with the Davi feature:http://www.clarenceisstarkravingmad.blogspot.com/
A direct link to the William Fichtner feature:http://clarenceisstarkravingmad.blogspot.com/2007/01/i-know-that-dude.html