I thought the book was good, not my favorite, but good. I would lean more toward the Barbarian Way, by Erwin McManus, Velvet Elvis, by Rob Bell, and Misquoting Jesus, by Bart Erhman. I do have to say though I have heard Donald Miller speak and he is very good then. He goes on some tangents, but very good and quite funny. (When he talks he also tends to explains that whole evangelical Christian who is liberal thing, Rob) Check out those other book (Tobyn warning: I have an obsession with the Jewishness of Jesus and where we as Christians stand in all of that) and in the meantime (Shameless plug for PCUSA) in January 4-7, 2007 at Montreat, NC is the Collegiate Conference with Donald Miller, Steve Hayner (don't know him), and Jonathan Kingham (musician). Donald Miller is so much cooler when you hear him speak so grab whatever College students you can find and bring them to the Montreat to check it out.
More info: http://www.montreat.org/thecollegeconference.htm