Update: The initial source and concept for this control was made available courtesy of FairFax as part of their investment into building applications for the Windows Phone platform.
Here is an update to the Wheel Control that I posted about previously. Big thanks to Clint Rutkas (Microsoft) of Monkey See, Monkey Buildfame for addressing a number of issues such as the flickering of items and the lack of flick scrolling.
Updated August 17 2010: Wheel Control