Microsoft Research has released Face Touch application in Windows Phone Marketplace. It allows you to change facial expressions on a photo and after that you have an option to share the final result on Facebook, Twitter, SkyDrive or Sina Weibo.
-Tap your face to create funny facial expressions
-Integrated with Pictures Hub
-Share your photos on Facebook, Twitter, SkyDrive or Sina Weibo
You can download Face Touch from Windows Phone Marketplace for free.