Watched this last night... I can't imagine being in the middle of that, even with a concealed weapon. You'd have no idea what was happening, much less how many shooters there are or when you could hope to get out.
That Sum'b**** Rawks!
I don't know who was best, but here are a few from the top of the list:
BB King
Beck (you wouldn't know it, but he's crazy good)
Brian Setzer
Buckethead (with Les Claypool)
*apparently having a B name helps.
Jim "Reverend" Heath of Reverend Horton Heat
Tom Morello...