Dirty Jobs has been canceled, host Mike Rowe announced today. After eight seasons and many, many trips inside sewers, Discovery has decided to hang up the trusty headlamp. "Dirty Jobs is a very personal show, and it's difficult for me to imagine a future that does not involve exploding toilets, venomous snakes, misadventures in animal husbandry, and feces from every species," Rowe writes in a post on HuffPo. Sigh. Now who's going to interview avian vomitologists?