I didn't really, either. I was interested in audiobooks for fiction for a while, but couldn't get into anything (was looking for a series to get stuck into and nothing was clicking with me). I thought about trying Bond and found the Casino Royale one on youtube - really liked it.
Then it just so happened that the Darth Bane one I tried next was the same way.
It makes them VERY fun to listen to and, if it's a good book, more enjoyable that a lot of movies, IMO.
Oh, and following up from a post I made in the "favorite book as a kid" thread, I finished reading "Mouse and the Motorcyle" with Micro-Wiggy. We're onto "Tales of a Fourth Grade Nothing" now. lol