From Poop to Potable - a self-powering incinerator funded by The Gates Foundation that extracts drinking water from human feces.
Fecal transplants have been used with success to treat C.difficile infections, often acquired in hospital or nursing homes and notoriously difficult to treat. They have also shown some efficacy in treatment of ulcerative colitis (pdf). [more inside]
Dog poop is serious business. When it's not properly disposed of, it can be a significant pollutant, contaminating groundwater and streams. Some cities are taking action, but few are willing, able or ingenious to go as far as Petah Tikva, Israel, which is building its own dog-poop DNA database with the intention of rewarding conscientious pooper-scoopers and punishing scatological scofflaws.
The lengths some people will go to get high. Jenkem or jekem is a drug made from raw human sewage, apparently most prevalent in Africa. (Mildly NSFW.)
You: a man with incredibly bad gas. Location: A busy street. Your mission, should you choose to accept it: Fart without the man next to you noticing. Because scatological humor is timeless.
Thanks to global warming we are in deep shit. Biologist Gerry Kuzyk was hiking with his wife in the remote reaches of the Yukon when he caught the putrid scent of caribou dung wafting through the chill air. Then he saw it -- the biggest pile of animal droppings he had ever seen, 8 feet high and stretching over a half-mile of mountainside.
Experiences on the Toilet This is one of the craziest and most cringeworthy sites I've ever been to. It's a site jam packed with postings from people detailing particular 'movements' they've had.. episodes of blocking toilets with 'whoppers' and 'interesting' odors they've experienced. Yes, it's the ultimate guide to everyone's experiences in taking a dump.
Ewwwwww. Every reason I never eat at those deli salad bars, wrapped into one arrest ... and hey, there might be copycat crimes at other delis in the area! Ewwwww.
Finally, a site that lets you send dog shit anonymously to anyone in the world, wrapped up in elegant packaging with a nice label affixed to it with the greeting of your choice. I'll be ordering the PooPoo Grande.