I'll second the Bela Fleck recommendation. Fantastic show.
It had the most incredible bass solo I've ever seen (or heard!). Vic detuned the bass all the way to nothing (just totally loosened all the strings) then tuned it back up, using it as a percussion instrument on the way. Phenomenal! Later in the show, he busted a string, and kept playing as if nothing happened. He even hit all the notes (as far as I could tell)
Metallica does good shows, if you can put up with their opening bands. (boy, they've just sucked lately!)
If you haven't seen Dave Brubeck in concert, DO IT AS SOON AS YOU CAN. He's 80 some-odd, and still doing fantastic shows.
