Hmmm, some shows I've had a BLAST at:

-Umphrey's McGee (x3)
-Yonder Mountain String Band
-Buckethead
-PRIMUS
-Les Claypool's Fancy Band
-Keller Williams (x2)
-The Disco Biscuits (x2)
-Perpetual Groove (x2)
-Gov't Mule
-The Flaming Lips
-Bela Fleck and the Flecktones
-Tim Reynolds
-Tea Leaf Green
-Groovatron (x2)
-Trampled by Turtles

There's tons more, but those were my favorites. ~