About 10 people with varying skills (engineer, doctor, marine biologist, handyman, martial artist) are placed in a large urban industrial landscape, and challenged to scavenge food, water, supplies, and then create livable shelter, while being occasionally attacked and looted by other scavengers or living victims of a deadly infectious virus.
Pretty awesome concept, and a pretty intense show. A few episodes in, and they're focusing almost entirely on the science/mechanics/experiment (like building a generator that runs on wood gas instead of gasoline) instead of personal drama.
Got it on DVD from the local video store, but may have watchable episodes on the website.
http://dsc.discovery.com/tv/colony/