One commuter has some spoke light mounted and it's not to bad when viewed from the side. Last month I had a chance to speak to one of the founder for Revolight at the bike Expos. I saw their demo of the Revolight and I was pretty impress by it. Very eye catching from the side, and from the front and rear. They are soon to be out in the market. Only thing I did not like about it was the price might be at around 200.
http://www.revolights.com/