Which was your favorite book of the series? I've heard there are plans to make all the books into movies, but I'm sure that will depend on the success of this first movie. Would you recommend these books to adults, or are they more catered towards children?
Not sure which one is my favorite, but I'm rereading them right now. I'd have to say after about 20 years between readings, that they are still very enjoyable.
There are going to be comparisons drawn between LW&W and LOTR, but go and pick up just about any epic fantasy novel, and I bet there will be a quote or review inside the cover that calls it "the next LOTR" or "the next Tolkein." At least as far as literature goes, comparing something to the LOTR books is now sort of like saying "this gellato tastes like ice cream". (similar ingredients, different flavor and texture)
I have a feeling that any fantasy movie coming out will be compared to the LOTR movies, but mostly because they've set a benchmark of what epic fantasy can be. They don't always have to be cheese like Krull/Conan.
Anyway, I really hope that they make most of the books into movies. (Not sure about the Magician's Nephew, though...that one could probably be worked into a 10 minute "history of" segment...it doesn't add a whole lot to the series besides a little backstory on the witch and the wardrobe)