Yeah, I hope so too. Inkheart was a good book, and they'd better not ruin it with the movie. But just because it's made by New Line doesn't mean it'll be great; that depends on the director.
Don't get me started on the Eragon movie -.-. It was the worst book to movie adaptation in the history of movies. Terrible terrible terrible. The Harry Potter movies aren't very good either. Not as bad, but not a whole lot better. Lord of the Rings is the only one that I know of that was...
Yeah, most movie adaptations of games or books generally fail pretty badly. LotR was the best I've seen, but the books are better. There's just so much that can be described/expressed with written words that you can't bring into movies.
As for turning a video-game into a movie, well, most...