Well, it depends. If it's something I really want to see, I totally ignore the critics. If I'm kinda interested in seeing it and 9 out of 10 reviewers think it's crap, I'll probably wait to rent it. If it's 50-50, I'll take a chance. And if it's a summery movie full of explosions and pointless chases and stuff, I'm so there anyway. The cute guy factor also is important. :)