The answer: Hugh Laurie.

Ha! Just kidding. Actually, the question this week comes from TV Squad reader Toni, who asks "On House, what was the name of the guy who played Stewart Nozick?" She knows him from somewhere but can't think of his name or what show she knows him from (that has happened to all TV viewers at some point, I think).

The actor's name is Todd Louiso, and he's one of those character actors who has been in a little bit of everything over the years, on TV and on the big screen. The first thing I think of when I see Louiso is his role in the John Cusack film High Fidelity (that's him with Cusack in the pic). He played the record store worker that Jack Black was always teasing. He was also in Apollo 13, Snakes on a Plane, Thank You For Smoking, Jerry McGuire, and The Rock.

The TV show that viewers might remember him from is the short-lived Phenom and several episodes of Chicago Hope. He has also made guest appearances on Law and Order, Everwood, Without A Trace, and others.