As I'm sure almost every reader agrees with, I prefer reading books to watching movies. I can easily curl up with a pile of books through all sorts of crazy hours, but whenever I sit back late at night and pop in a DVD, more often than not, I end up waking up when the credits roll at the end.
This makes sense, because horror stories are most effective when they produce a visceral reaction in the watcher/reader, and movies have the advantage of showing the viewer everything and using music to heighten emotion.
However, when it comes to literary stories, those are primarily meant to affect the watcher/reader's mind and make them think and feel on a deeper level, and words can do that better than anything.
So what do you think? Are movies more effective than books in some cases, and vice versa?