My friend from the ALM Ranger team Mike Douglas have created a free Windows 8 Store App called Team Planning Poker to help distributed and co-located teams run agile planning poker sessions. It uses TFS (using TFS OData Services) to pull in backlog items, allows multiple people to join a session (using Azure Mobile Services), go through the pointing process, and then publish the estimate back to TFS.
you can enjoy download the app from http://www.teamplanningpoker.com
Thank you Mike for such cool stuff!
Enjoy the planning game guys!