Woot for double-posts in the book thread! Or not. No matter.
I recently saw a trailer for an upcoming movie called City of Ember, and I thought "ooh - it's like Fallout!" I hit the bookstore and found that it's a sci-fi book intended for "young readers" (like the first Harry Potter books, I think). Not kids - probably teens.
ANYWAY... I read it over the course of about a day. It's a really good book, and it does have a vibe of "what if you lived in the vault from the first Fallout, but didn't realize there was anything else out there?" There are two sequels, with a third coming out later this month. I'm gonna be hitting the bookstore tomorrow to get the next one.