Who's that dude in Grey's Anatomy?

The last two episodes have had a white supremacist character - who plays him? He looks a hell of a lot like Nathan Fillion, but apparently is not. This is bugging the hell out of me. IMDB isn’t helping me out here either.

Gale Harold?

[QUOTE=drm]
Gale Harold?
[/QUOTE]

Yep, aka Brian from Queer as Folk.