Shock.swf

mit.edu/activities/puzzle/2010/puzzles/2009/the_zyzzlvarian_holovid_institute/shock.swf is a screamer webpage. It shows a text "Wait for it.." and after some seconds, a flurry of pictures, including Regan MacNeil from The Exorcist, but also some non-scary ones. After that, a message appears, saying "Boo! Did I scare you?"