While Michael linked to the paper below, it is also the subject of a NY Times article entitled Study of N.B.A. Sees Racial Bias in Calling Fouls. Two highlights from the article: First, the caption under the headlining photo--"Minnesota Timberwolves guard Mike James, left, said he did not think he was treated differently by white and black officials"--says a lot about the need for systematic empirical inquiry. Second, the NY Times engaged in peer-review--"Three independent experts asked by The Times to examine the Wolfers-Price paper and materials released by the N.B.A. said they considered the Wolfers-Price argument far more sound." The article also discusses multivariate regression and Dallas Mavericks owner Mark Cuban's viewpoint on statistics. It's a must read!!!