Dave does some race humor, and he's damn good at it, and is an equal opportunity comic. He hammers blacks more than any other race, followed by whites, asians, hispanics, jews, arabs, native americans, etc.
And most of his best stuff has nothing to do with race at all. Charlie Murphy's True Hollywood Stories, Kneehigh Park, all the Lil Jon stuff, anything with Tyrone Biggums, Slow Motion, etc.
Bunch of videos here:
http://www.comedycentral.com/tv_shows/chappellesshow/showclips.jhtmlIf you don't laugh your bellybutton off you're culturally illiterate, humorless, or Staga.