With the newest (and last) Harry Potter book now out, I decided to re-read the first 6 before I start #7. With some of them, such as Sorceror's Stone, it has been as long as 6 years since I last read them.
I am amazed at how in many cases I remember the movie better than the book. In fact, several times I've noticed places where the action or the dialogue in the book differs significantly from the movie. For instance, when Harry is picking out his wand in the book, the wrong ones don't blow anything up as they do in the movie -- they just don't do anything at all.
Michael is reading the 7th Harry Potter right now, but the way I'm cruising through #1, he'd better hurry up. We got the new one out from the library -- I had put a hold on it more than a year ago, so I was one of the few who was able to get a copy right away -- so I have 3 weeks to read all 7.