I Am The Messenger and The Joy of Re-Reading

I am reading I Am The Messenger by Markus Zusak. It's really good so far, even though I've read it before. That's right. I'm re-reading.

And I'm not sure why. It's not like I don't have other books on my reading pile. Books that are new, spine still perfect and unfolded, pages not mangled yet, like my copy of this book. Still. I'm re-reading. And loving it.

I Am The Messenger is the story of somewhat loserly Ed Kennedy, who is nineteen and a cabdriver. He watched a botched robbery (very funny opening chapter), and then begins receiving mysterious playing cards, with addresses or names on them. They're places he needs to visit, people and situations he's supposed to fix, though he's not sure why.

We get to know his friends Audrey (who he's secretly in love with), Marv and Ritchie, his foul-smelling dog The Doorman and his cussing mom. All while Ed is trying to figure out why he's getting these cards, and why he's chosen (or decided?) to be the messenger.

I'm roughly in the middle of the book, and loving it just like I did when I first read it a few years ago. The voice is perfect, characters fascinating, and IT HAS A GREAT MYSTERY! Gotta love it.
I also remember that the ending wasn't quite as good as the rest of the book, but stay tuned on that part, since I haven't gotten there yet.

It's fun to re-read favorites. I Am The Messenger is one of mine; so what's yours?