I have a computer on my zoom-zoom, but not on my commuter.
Just bought one for the commuter so I can keep track of commuter miles and add them on BikeJournal. I got inspired by Pansy and RaleighDon, and I think keeping track of miles would help me keep on track with commuting.
I love that Seattle busses have bike racks, so even while it is still dark at each end of my commute I can at least ride a few miles. Not ready yet for the full 2 1/2 hour commute, but soon it will be light enough that I can get in at least 1/2 hour each way!
"If Americans want to live the American Dream, they should go to Denmark." - Richard Wilkinson