I have tons of ideas and I love to see when people are actually making them happen, like the guys over at FaceRig Software for example. It was just about two weeks ago when I was thinking about how cool it would be to have a webcam app that analyzes facial expressions and doesn't broadcast the source video but instead broadcasts a selected 3D character.
I like the fact that you can also change your voice to a voice that matches the animation, this is what I would have done also. These guys are doing pretty much everything with the project that I would do if I had the resources to do so.
Check out this video to see what they have so far: