I recently finished an audiobook as well - World War Z by Max Brooks.
It's by the same author that wrote the Zombie Survival Guide, which I've seen and flipped through, but never read.
World War Z was my first audiobook, and I listened to it on my ~20 minute commute. It was very well...written? Read? Both. I'm not sure how the dead tree version is, but this was made up of interviews from survivors of various nationalities and professions. I immediately recognized Henry Rollins and James Woods, but there are a few more that I new but couldn't place a face with the voice. I found the multiple actors a definite plus to the experience, but I wonder if that is due to the interview style of the book. I don't have any prior audiobook knowledge to compare.
If I didn't have 40 minutes per day alone, I probably wouldn't have even tried it.
I got it from emusic.com, for which I had a coupon for some free music and an audiobook.