The Futurama producers have plenty of experience writing series finales. After all, Wednesday's episode marks the fourth time they've thought they were bringing their outrageous animated sci-fi comedy to a close. Originally canceled by Fox back in 2003, the show later gained new life (and fans) with a series of DVD movies before Comedy Central resurrected the show in 2010. Producers thought their new home would last just one season, so they prepared for another ending. Now, two years later, here they are, signing off again. And this time it's for good. Probably.