I am always interested in ways we are able to talk one piece of content and do something with it. I recently started using Photospeak an iphone application you can find on the app store. It is somewhat like Crazy Talk that I have used over the years for things like my Second Life Wimbledon 2008 video and the Daz in foil (of pointawayfromface) and also these examples
Photospeak lets you take a 2d facial photo, it then sends it off to a server, does some magic and returns an instrumented and working interactive semi 3d version of you face. One that tracks movement and can also lip synch. It is always a little creepy, and very uncanny valley, in particular because of the eyes. However, when recording this video of the iphone app I happened to double tap the screen and discovered this add on to it. (it may be documented but who reads docs nowadays?) It also instantly made the face more convincing I found. Not least because I wear glasses normally.