3D? Terribly lame when it's tossed into devices as a bullet point feature. Trimensional for iPhone takes a picture of your face and maps your mug in a 3D model.

It's a front facing camera app that turns your face into a 3D model. Trimensional is easy to use: go to a dark room, turn your iPhone 4 screen to the highest brightness setting, and snap a close up of your face. The app instantly maps the picture it took it into a 3D model (the speed is really amazing) and you can move the model left and right to see how big your nose is, how far your brow juts out and so on. And of course you want to share your 3D model! You can export and email the 3d picture in either a .mov movie or gif file to show off how silly you look.

Also! There are different rendering options on how to see your face too. Textured, meaning like a picture, or gray, like those pre-rendered faceless human bodies you see in video games. Additionally, points, which uses tiny pixels to serve as 3D points, polygons, which connects those dots together and wireframe, which puts the depth of your features on a wire.