Kite Runner - and as everyone else has said, it it fabulous!
I'm also reading
Surviving the Applewhites aloud to my class at school.
I also recently read
Devil in the White City. This book is crazy good - I would HIGHLY HIGHLY HIGHLY recommend it to everyone. It is one of those books that when you're finished you don't think you can read anything else because it was so fantastic! (Okay, maybe i'm a little prejudiced seeing as it takes place in Chicago and I'm from Chicago.

)