Great movie from 2007. I will grant that my expectations were very low before watching Saw 4. If a movie can keep me focused for the full movie time, that's really great. Anyway, Horror may boast of one of the biggest numbers of good movies. Great actors and great story. However, I think that well-chosen actors and an interesting script are not pushed to the background by music, because a good film consists of many elements. Feel free to play the movie online or download it to your computer.