Wow. Thats what we said when we saw these pendant lights from Bocci.
The 14 series pendant lights are designed by Omer Arbel, whose background in architecture is shown in the way the lights affect the spaces around them. The series consists of small cast glass pendants, 4" in diameter, that hold a 10-watt halogen bulb. They're suspended using cable so that they appear to be bubbles floating. Imperfections in the glass spheres add to the effect.
cb2 sells something similar to this (candles as opposed to real lights) and for about 4 bucks a pop they are a real steal compared to these. They come in circular and square clear glass versions.