Dr Martin Austwick and Ollie O'Brien here in CASA have produced an updated version of the animation of Barclays Cycle Hire bikes on a typical weekday:
Boris Bikes redux from Sociable Physics on Vimeo.
The data for the bikes is courtesy of Transport for London, with the Thames, parks and the underlying network being faithfully drawn by OpenStreetMap contributors.
You can find full details over at Suprageography...