There are some books that would be great movies. My favorites are Dragonlance series Underdark Series Foundation Elenium
I love to read and I think that there are tons of books that could be made into good movies. Especially if they had a large hollywood budget. For example, Terry Pratchett has two movies based on his Discworld books, both of which were pretty low budget BBC movies. I think any of the Discworld books with a decent budget could be great movies. I'm also a huge fan of Neil Gaiman and I think that more of his works, especially American Gods and Neverwhere, should be made into movies. I think that most of Gaimans writings would make fabulous movies as his work is so descriptive and imaginative.