Electric Bike: Have you bought or built one?

[Harbourmaster]

Since I only have a short 10 mile commute to work I am considering riding my bicycle to work at least a few days a week. I have also toyed with the idea of adding an electric motor to my existing 6 speed cruiser to make the ride a little more fun (read that as Less Work).

This is the system/kit I am considering http://www.cyclone-usa.com/store.php?crn=199