So cnnsi mentions in this article that the lack of black quarterbacks in the NFL has been reversed:

My how times have changed. For the better. Fully one-fourth of the league's 32 teams feature black starting quarterbacks: Carter, Dallas; Kordell Stewart, Pittsburgh; Aaron Brooks, New Orleans; Rodney Peete, Carolina; Vick, Atlanta; Steve McNair, Tennessee; Daunte Culpepper, Minnesota; and Donovan McNabb, Philadelphia.

But they fail to point out the more important fact. Of those quarterbacks, at least 3 (Carter, Brooks, and Peete) really aren't very good. I mean any racist would still start Donovan McNabb, you'd have to be an absolute moron not to, but the fact that a bad black quarterback is starting in Dallas is an actual sign of progress.