My brother TiVo'd it because he's a big Herbie fan, but when I watched it all I noticed were all the great bassists involved, Pino Palladino, Marcus Miller, John Patitucci, Nathan East, among others. I was also suprised at the John Mayer segment, I really dug it. And of course, Herbie was great. I'd recommend checking it out.

what is it? A dvd or live CD? You have a link?

Both I think, the CD is of him doing collaborations with a bunch of people, and then they filmed a documentary around the process. Should be on Amazon.