Book based movies I want to see

I am Number Four



and here's the trailer:



Beastly







and here's a behind the scenes style trailer (because the official trailer I found had commercials):




...and in other exciting news that you probably know all about but is new to me: I saw that they are making a movie based on the Mortal Instruments series by Cassandra Clare. These books are at the top of my TBR (might be our next book club selection) and the covers are just gorgeous (looks like they made excellent casting choices).

and coming soon...

I'm a little surprised in my interest because I am not the biggest fan of YA titles but I guess this goes to show you that great storytelling doesn't have age limits. What about you? What movies are you waiting for? Do you usually like the book to movie adaptations or are you a book purist that prefers to keep stories on the page, not the big screen?