My friend told me about letmewatchthis.com 2 weeks ago. I was able to watch dozens of my favorite movies, without any problems. The site lists many links for each movie, so you're bound to find one that works. There are no ads on the site, no subscription required to use the site, and no spyware or any tricks.
Movies range from CAM copies of movies that are in theaters right now, to movies from 1903. I've never seen such a huge variety. They also have dozens of hottest TV shows, with new links added daily.