Have you all seen this?
http://www.seriouseats.com/2010/04/cook-your-meat-in-a-beer-cooler-the-w...
This site is awesome anyway, highly recommend it. This article is wild. on iTunes, there is a podcast i think gardenfork or something like that where the guy did it and tested the results. It's legit.
Had no interest in springing 500+ for a sous vide supreme, but this could work!