Meet FaceRig: a kick-ass program that lets you take over a virtual character and show your expressions and emotions with just a webcam. You can stream the output to Skype or any other service that uses a webcam (maybe even Hangouts). FaceRig uses real time image-based tracking technology by Visage Technologies and animation & visualization framework by Holotech Studios to get the job done.
FaceRig offers real-time expression tracking and on-the-fly animation. It takes care of the encoding job as well. FaceRig will be available in 5 versions (including an iOS version). Support for Android could come in the future. This technology totally rocks. What more can be said?