The secret identity of
Homer Simpson in
The Simpsons episode titled "
The Computer Wore Menace Shoes" (
CABF02) where he gathers rumors and posts them to the
internet as news. He is depicted in the media as a picture of himself with a black bag over his head with a
question mark.
When Homer wins a pulitzer prize for uncovering dirt on people all over the city, he reveals his identity as Mr. X in order to collect the award and money. This turns out to put a stop to his rumor-gathering, becuase people stop sharing information whenever he's around. Without information to keep his website active, Homer eventually decides to make up his own conspiracy theories, including one which involves using flu shots for mind control.
Homer is abducted by an unknown organization and taken to an island occupied by people who "know too much". They tell him that he uncovered their conspiracy to use flu shots to make people buy stuff (that's why they are given out right before the holiday season). Everything on the island is designed to keep him drugged so he doesn't talk, including beverages, ice cream, and even croquet balls.