The Hennessy Hammock that is.
At least that's what Dwell magazine says. There are also reviews of the tent from USA Today, Newsweek, Backpacker, Field and Stream, National Geographic, and Sea Kayaker here.
This tent does look good for the right application. It only weighs about 2 1/2 pounds. I can see some definite upsides to sleeping in a hammock-tent vs. on hard, rocky or wet ground. This tent might be really good for bicycle camping. The only downsides I could see is you need to find a couple of appropriately spaced trees to tie it to and you would need to be pretty tired to get a good sleep in a hammock. Probably not a problem after a day of biking or hiking.
You can read a little bit about Tom Hennessy the designer of the tent or the....Product Description From Amazon -
"Experience a level of comfort on the trail as good as or better than your bed at home with this innovative personal shelter. No more sleeping on sloping, rocky or muddy ground, waking up with aching muscles or searching for a level campsite. The lightweight Hennessy Cocoon's new features make it a perfect alternative to heavy tents. Includes bug screen, rain fly, support ropes, webbing straps for protecting tree bark, ridgeline for hanging personal items, stuff sack with printed instructions, overlapping fabric seal with partial velcro closure. Ideal emergency shelter, protection from disease-bearing insects, rain, wind, sun, small reptiles. Used in jungles, damp northern forests, forest fire and search and rescue operations, military operations and field emergencies, Appalachian and Pacific Crest Trails, scout camps. Built with highest quality fabrics, ropes and fittings. Reviewed by USA Today, Newsweek, Backpacker, Field and Stream,National Geographic Adventure, Soldier of Fortune, dwell Magazine. Can also be used as a tent on the ground and also as a hanging chair or lounger. One year guarantee, superior construction, best quality fabric, ropes and fittings."