Lite-Spoiler (you are warned) - I really enjoyed this performance. It was playful and funny. He does a great job of letting you figure out parts of the story on your own. Also near then end when he comes to his conclusion over the coke head club owner, I found that truly profound. I really don't want to ruin it with saying what it is, but seriously it is truly a pearl of wisdom and I really mean that.
On the down side, the REM quotes early on are really over used and distract from the book. I was REALLY concerned they would run throughout the book, but I am glad it was only in the beginning.
Oswalt is actually a pretty good narrator but the material was not all that funny and the REM quotes totally disrupted the flow of the reading.