Wikipedia is full of interesting content, some of which can be truly creepy. Here is just a taste of what you can expect to find, if you dig deep enough.
1. The Max Headroom broadcast signal intrusion was a television signal hijacking that occurred in Chicago, Illinois, United States on the evening of November 22, 1987. It is an example of what is known in the television business as broadcast signal intrusion. The intruder was successful in interrupting two broadcast television stations within the course of three hours. Neither the hijacker nor any known accomplices have ever been found, caught or identified, which leaves the incident unsolved.
This is one of weirdest videos you will ever see and is included in most YouTube strange video lists. Some of the content gets down right disturbing at about the 1:40 mark.
2. The Original Night Stalker is the name given to an unidentified serial killer and rapist who murdered at least ten people in Southern California from 1979 through 1986 The crimes initially centered on East Sacramento where at least fifty women were sexually assaulted between June 18, 1976, and July 5, 1979. The perpetrator was dubbed The East Area Rapist. In 2001, the Northern California rapes were linked by DNA to murders in Southern California.
The Original Night Stalker/East Area Rapist was never apprehended; several suspects have been cleared through DNA, alibi, or other investigative means and methods.
For more like this, check out the following Buzzfeed Article.