OK, this is a total inside joke that only people who attended the Great Keynote Revolt of 2009 will understand.
I was at the HighEdWeb 2009 conference in Milwaukee this week, and one of our keynote speakers (@notjared) gave a speech that dated from about 2004 and was poorly adapted to a highly technology savvy audience. Lacking a Twitter account (true), he was unaware of the vicious back channel that cut him no slack and granted no mercy. You can review a transcript of it here (starts at 11:59 AM), or read posts by people who weren't there here and here. And here's a balanced post from someone who was there.
At the very least, he gave me a way to save our heroes from the zombies... but he replaced them with something far, far worse.