What was the scariest sceen in a horror movie?

[TheLegacy]

Anything that has really slow torture - saw this one where the guy had this website and he always found the woman's fear then used it against her - example cutting her with a knife. He would get them to beg to be killed, then use to say, "you asked me - therefore I am not murdering you - I am acting your wish".. then he cut a smile into her face and other things as surfers watched - she later began haunting

The ultimate for me was a Vincent Price movie called The Fall of the House of Usher. About a family that had a genic marker that once in their lifetime caused them to appear dead for a week. Knowing this a wife who was cheating never told the hospital and he was buried alive with a small window on the coffin - as he was being lowered in - you could see his eyes wake up but he couldn't speak. Freaked the hell out of me.