One last thing. Everyone mentions Nitti, Wooten, ect. And I agree they're great players. But Brian Bromberg is overlooked. He's incredible. It's jazz, but it's super technical, bass pyrotechnics also. I highly recommend him. I have his CD "you know that feeling", and everything that sounds like a stringed instrument is him on a bass of some type (upright, tenor electric, normal 4 string electric, you name it, he's likely has it on there somewhere). He does tapping, slapping, picks, fingers, harmonics. A good number of parts are at ridiculous speeds (yet somehow he keeps a machine-like precision, never once is he sloppy)
I never heard him before this CD and took a chance buying it. It was well worth it.