I'm more inclined to watch movies these days.
Books are (usually) the brainchild of a single person, whereas movies, despite the popular notion of where creative control lies (either the producer, director, whatever) are a product of teams with obligation to those who foot the budget. So, the quality of a movie should theoretically be what one expects going in based on the production team, whereas books can be all over the place.
While I would like books to be better than expected, I want to avoid books worse than expected, and most of the books I've chosen to browse recently have been far below expectation. Consistently, in fact.
Movies at least I can sort ahead of time, so I know not to waste $7 - $10 on a ticket/DVD and 2-4 hours of my time. If there's an actor I hated/didn't like in a previous movie, chances are I won't like that actor in a new one. That gives me more info when making a decision. With single-author books, I have no idea.