It's a "Simpsons" mega marathon.<br/> <br />To celebrate the 25th season of the popular animated show, broadcaster Fox is airing all 552 episodes starting Thursday, August 21st.<br/> <br />Fans will get a hefty dose of Homer and company with each episode airing back-to-back in a 278-hour stretch on Fox cable channel FXX.<br/> <br />"The Simpsons" fest will end on September first.<br/> <br />The show is the longest-running animated series and American sitcom with its pilot first airing in December of 1989.
