Cutthroat Bitch's (SPOILER ALERT) death scene with Wilson is still my alltime favorite (OK, top 2, I just remembered about Lin-Manuel Miranda) House episode.

And he's in at least one episode of Season 3 of The Newsroom (a few more episodes to binge). Always like seeing him pop up.

Justified. Margo Martindale, Walton Goggins, Jere Burns, Garret Dillahunt, Adam Arkin, Michael Rapaport, Edi Gathegi, Jim Beaver, Ron Eldard, Stephen Root, MC Gainey, Brent Sexton, Stephen Tobolowsky and of course, Constable Bob…(Patton Oswalt)

Couldn't agree more, that was my introduction to him, and right now I'm watching him in the last season of Justified. Two outstanding shows chock full of fantastic character actors.