Books that should be movies (or series').
A couple I'd love to see:
Shadowland by Peter Straub - Sureal, horror/thriller.
The Talisman/Black House by Stephen King. Talisman may be in the works. Both could be a great series.
More Clive Barker stuff like Imajica, The Great and Secret Show, The Damnation Game, etc. His stuff is SO unique!
The Witching Hour by Anne Rice. Stories within stories. A series would probably be necessary.