Here are some of my current guitar faves with a couple of duos thrown in:

Wareham/Eden - Luna
Moore/Rinaldo - Sonic Youth
Rick Rizzo - Eleventh Dream Day
J. Mascis - Dinosaur jr.
Doug Martsch - Built to Spill

I like the 2-guitar formula when a band gets the right blend of tones from humbuckers and single coils (Les Paul and Strat, for example). Feedback is a plus, too.

Then I've got my classic old school list:

Chuck Berry
Jimi Hendrix
Keith Richards
John Fogerty
Neil Young

Then I have my rock-a-billy/surf list:

Duane Eddy
Rick Miller - Southern Culture on the Skids
Link Wray
Nokie Edwards - The Ventures
Luther Perkins - Tennessee Two (Johnny Cash)