Hiwatt baby! Such a killer sound, totally Gilmour but Keith makes it his own somehow.Keith Urban doing "'Til Summer Comes Around" on some country awards show. It was hands down one of the best tones I've ever heard. Dropped my jaw because of how much better he sounded than everyone else on the show. Then Tim McGraw came out and did his hokey "Southern Voice" song. I actually felt bad for him and I swear it seemed like he was upset he had to follow Keith after that performance.
Best clean tone was Caesar Diaz demonstrating one of his amps at a NY guitar show. Such a nice guy. (and I should have bought it!)Live, recorded, whatever.
I saw Leonard Cohen live a few weeks ago and his guitarist (not sure of his name) got a truly gorgeous clean tone from his Tele.
Interested to hear what other people rate as awesome clean tones.