1. And Ted Kennedy's Dead

Compromised page: Senator Edward Moore Kennedy

Year: 2009

On what was supposed to be a celebratory day, Senator Ted Kennedy suffered a serious seizure at the post-inauguration lunch for President Barack Obama. If that wasn't bad enough, early the next morning, the Wikipedia page of the legendary senator was edited to say that he was "removed in a wheelchair, and died shortly there after." To top it off the page was edited by someone with the user name "Gfdjklsdgiojksdkf". Luckily, other top Wikipedia editors caught the error within minutes of its posting and changed it.