Bands of Undetermined Genres:

RX Bandits (they are sort of like the police and sublime...mixed):

"Dinna-Dawg (And the Inevitible Onset of Lunacy)" and "Never Slept So Soundly" off of "The Resignation" CD.

Bela Fleck and the Flecktones (a band that takes blues, bluegrass, jazz, and funk, all fuses them into one. Rarely any singing): (thing to look for: Bass. This bass player is one of the sickest I've ever heard.)

"Leaning Tower" from their "Little Worlds" CD (Disk 2)

"Next", "Snatchin", and "Sleeper" from their "Little Worlds" CD (Disk 3)

And Many More...In fact the bass player, Victor Wooten, has done a lot of stuff on his own (more of a Rock genre, but it definitely varies):

"Are you ready, baby?", "My Life" and TONS of other amazing things he does from the "Victor Wooten: Live in America" CD disk 1. (live as in, he plays live in front of an audience. He's amazing)