This is probably as good of thread as any to mention Flick Chart! Pretty neat movie rating system. They make you choose one or the other. I've rated about 1000 movies and my list is actually pretty true to what I would rate them at.
http://www.flickchart.com/DanGarion
Don't mind the movies I haven't seen, I didn't want to vote on some of the challenges it was putting up, so I've chose that option at times.