Good Lord, I can't believe I left out Junior Brown. I have a CD of his called
Junior High. He's kinda like Ernest Tubb on crack.
If you're downloading them, give "Highway Patrol" and "My Wife Thinks You're Dead" a whirl. Maybe not exactly what you're looking for, but the guy is phenominal. He's a great guitarist, too. Plays a custom made guitar than he can flip up and play like a lap-steel. He wails.
Damn, now I gotta run downstairs and dig out that CD.
P.S. If you've never heard it, as a bluegrass fan, you should check out a song called "Ruby Are You Mad at Your Man" by the Osborne Brothers. Highly entertaining.