One of the cool things about growing up is that you sometimes get new things added to the old things you enjoyed when you were a kid.
For example, I love the Bunnicula series by James Howe. They're both listed on my list of favorite books. I read them all as a kid, and they were awesome.
Well, now that I'm a grown-up, I've found that Mr. Howe wrote a new Bunnicula book, Bunnicula Meets Edgar Allen Crow (in 2006). So now I've got a new Bunnicula book to read! I'm really happy about this.
(Same thing goes for the new Ramona book by Beverly Cleary.)
If you haven't read Bunnicula, it's about a bunny rabbit who is also a vampire (!). At least, that's what Chester, the paranoid cat, thinks. There are many hilarious, crazy adventures when Chester embarks on a quest to destroy the evil vampire bunny. It's more fun than a barrel of monkeys.