I commute 10 miles one way to work on a Rans Rocket. It's a perfect way to start and end the work day, assuming the weather is good. This is the bridge that I cross twice a day:
http://www.flickr.com/photos/jimfraz...42191/sizes/o/
With it being darker in the mornings now, I just rigged up my old head lamp (Diamond Head Shot) on my Rocket. Mounted the headlight on the handlebar, and ran the wire for the six AA battery box down to behind the seat. I'm using rechargeable NiMH batteries in it and so far it's working great.