Harry Potter rocks - this is going to sound terrible, but I read the first two books last year on my honeymoon. I probably would've finished the third one, but it WAS my honeymoon after all!
There's another series of books that my grandkids (9 and 10 years old) are into - they are about the Baudelaire (sp?) twins and their unfortunate lives. Quite dark, but definitely appeals to the twisted sense of humour that seems to prevail in my family. The author bears the mysterious name of "Lemony Snickets." I think maybe I must have had a recipe for lemony snickets once.
I can't wait until Harry Potter hits the screen in November!