that reminds me of a program i wrote for my apple II after watching the movie 'prince of darkness', back in the 80'sI used it to fool my sister into thinking the movie was possible.
in the movie, a translator gets possessed by evil, and is found in one scene with her eyes glazed over just typing 'i live' over and over again.
i recreated the look of it on my computer, so it looked like someone was typing, and then had it only show up at random times, then blank the screen etc..
i left it running on my computer all day, and when i got home my mom was super upset with me, as when she was dropping off some of my laundry on my bed, the 'i live' screen popped up and scared the hell out of her