You might say the developers at Jellyvision do know Jack. They've been creating irreverent trivia, writing good (and bad) comedy, and recording hours and hours of smart-ass dialogue for their You Don't Know Jack video game series since 1995. 1995! That's 17 years of…well, a lot of pointlessness. And with the company's recent Facebook release, it's not looking to stop the fart jokes anytime soon.