I have seen just about every horror film, including Japanese/Chineese horror films....but no movie has shaken me like Paranormal Activity. At the end of the movie, I was shaky and it felt like my heart was in my throat. The anticipation is a killer....I dare to say this is the creepiest/spookiest movie I've ever seen! I would recommend it to anyone! Oh, and I've never heard grown men scream before until this movie. That's kinda funny.