One of my favorite lights was the Discoco Pendant Light by Christophe Matheiu from Marset. The light is made from steel rods and ABS plastic. I guess that is the only drawback that I see. I would prefer if it were made all out of powdercoated steel or aluminum than plastic but it is very well designed and I actually couldn't tell until I did some further research on the fixture.
One thing I really like about the fixture is the fact that you can't see the light source. I find it really distracting to have the light source visible, though there are some lights that pull it off. With the glossy white surfaces, the light bounces around and creates a nice glow.