The BrightBuilt Barn is a very interesting exercise in the future of shedworking, combining as it does a studio space with the potential to turn it into something more residential. Essentially, it's a very eco-friendly build (selfsufficient for heat and energy, excellent insulation, and so on - more on this at the excellent Electronic House site) built by Kaplan Thompson for owners Keith and Mary Collins who intend to use it as an art studio, workshop for metals and electronics and office space. Its moveable partitions also mean it can be fiddled with to turn it into a house with a couple of bedrooms. It's a fascinating project which you can follow at its blog and wiki.
Thanks to Fiona Gilsenan for the alert