Original Title: Tintenhertz
This definitely was one of my favourite books when I was a kid. I completely fell in love with the idea of being able to - literally- bring your books to life. (But just as with the Hogwarts invitation letters, I'm still waiting for anything to pop out of my books =) ) It sounded magical, even though it doesn't really work out that well in the book.
Inkheart, the first book in the trilogy, I liked best of all. So many characters I liked are introduced in this book besides the wonderful concept. I was completely sucked into the story (pun intended =) ) and couldn't put it down. I finished this in 2 days, which was quite exceptional for me back in 2007.
Note: I read a Dutch translation of this book