I saw those on the 2008 catalogue of the Conran Shop.
I enjoyed the fun design of Mr Impossible Chair by Philippe Starck. Mr Impossible (it is a reference to him, lately?) was launched at the 2007 Milan Furniture Fair.
Mr Impossible exhibits a tension between the opaque seat and the translucent base. The two parts are welded by laser so they stick together. I did not find the red chair the online store of Conran Shop.
At $5400 a piece, I will only admire the OClock designed by Anthny Duffeleer. But it looks really cool! The Stick lights by Michael Young will be available in Spring 2009.
If round shapes interest you, read an article on The Home about how to use circles, spheres, and curves to smooth out your layout.