I recently posted on the Parallel Programming in Native Code blog about the Bing Maps Trip Optimizer sample, a developer sample that demonstrates how to combine JavaScript and C++ to compute the shortest route among a set of locations. Check it out if you’re interested in creating Windows Store apps that use JavaScript for the UI and C++ to perform the computationally intensive parts.

http://blogs.msdn.com/b/nativeconcurrency/archive/2012/03/09/ppl-and-javascript-bing-maps-trip-optimizer-for-windows-8-now-available-on-msdn-developer-samples.aspx