Look Into the Spiral is a YouTube video uploaded in 2007 by user brad80123, and it has since accumulated over 6 million views. It starts by showing the following text, scrolling from bottom to top:
Watch closely in the middle for 30 seconds...
It then shows a spinning black and white spiral, similar to other optical illusion videos. This goes on for about 30 seconds. After 38 seconds of the video, a picture of Regan MacNeil appears, along with the same violin screech used in the movie Psycho.
NOTE: The following video contains a screamer!