Artemide's Logico Single wall sconce:
Artemide is an Italian company that's been designing cutting edge lighting since 1959. In my opinion (and I'm not alone in this), they make some of the best lights— and best known lights (inlcuding the Tolomeo sconce that graces our bedroom)—in the world.
Logico looks like a soft cloud floating along. It's gorgeous and even a little fun (a word that doesn't typically describe most of my favorite furnishing). Logico also comes as a suspended ceiling light that floats ethereally above your head.