I'm working on another long post, but Election Day has had me occupied (GOBAMA!). For now, here's another creepy quickie.
On November 22nd, 1987, an episode of Doctor Who on Chicago network WTTW 11 was interrupted at 11:15 p.m. with a broadcast signal intrusion by an individual wearing a mask of cult character Max Headroom. The man had hijacked another local station, WGN-TV 9, earlier that evening, but was booted off the air before he could say anything. During the 11:15 attack, the man made a variety of cryptic remarks (including some in reference to a commercial for New Coke starring the "real" Max Headroom) accompanied with some truly bizarre images before the network regained control of their broadcast.
Here is a video of the incident with subtitles.
The man's identity was never discovered.