I was less impressed by Goldhagen, who I read in the context of a Nazism seminar in college. I far preferred Christopher Browning's interpretation. (Browning, Christopher. Ordinary Men: Reserve Police Battalion 101 and th Final Solution in Poland. New York: Harper Perennial, 1998.) I admit that this is probably because it fits into certain of my biases considering the study of history and the nature of humanity, but I would highly suggest reading both and coming to your own conclusions.

PS: The 1998 edition has an afterword in which Browning specifically addresses his problems with Goldhagen's work, and which I found worth reading just for the fact that it was essentially an academic diss.