I really like the Tiffany Aching books in the Discworld series(yes I admit I am a Pratchettfag), Wee Free Men, Hatful of Sky and Wintersmith. They're in the pre-production stages of making Wee Free Men into a movie, supposadly with either Terry Gilliam or Sam Raimi as the director, I would prefer the former seeing as Raimi's better films seem to be behind him and he's become too mainstream.
Although if he were to do the Discworld movies that would increase the chances of Bruce Campbell playing Sam Vimes... Not that he's in any Tiffany Aching books(yet).
Also anything by Rhold Dhall(am i getting his name right? it's been a while) is perfect for kids of any age, if not to read then to have read to them.