Tetsuo Sakurai
He's Da Man in Japan and does a lot of fusion stuff including Gentle Hearts with Greg Howe and Dennis Chambers, but my fave is this rock song he did as a session man. Well, he's not credited, but there can't be two guys who play like that, can there?
Such growling tone, such time, such chops, such DARING note choice! The meanest, in your face funk groove ever.
http://www.youtube.com/watch?v=l-GGG5N0Yhc
Please, no 20th century bassist!!! 21st only.