A very thoughtful player...
I've seen Dave with the Bad Plus a few times. He's a very inspirational player. Very progressive in his approach to jazz. His playing is rambunctious and joyful, and very enjoyable for people outside the common jazz audience. He really brings something new to the table.
The new BP record with Josh Redman is great.
I had a rather funny conversation with Dave about cymbals being designated as "crash" or "ride". I believe he called that fascism. It was pretty funny, and he seemed like a really approachable guy.
I do feel there is getting to be a bit of a fan cult around him. But his playing is so musical that he really seems unfazed by the celebrity he's earned among drum dorks like myself. The flamboyance in his playing serves the music, and not the goal of showing off for fans.
If you're into his stuff, I'd also recommend you check out Scott Amendola, a Bay Area musician who drums with Charlie Hunter as well as his own band. For me, he's right up there with Dave King.