If you've ever wondered what it would be like if your friends got their hands on a functioning Portal gun, you should check out visual effects and motion graphics artist Jason Craft's latest project on Vimeo. While the plot isn't much more than a few guys messing around with some highly advanced technology, the video is still amusing and the visual effects are fantastic. Craft started the project as an experiment, and used 3D tracking and 3D camera projection to pull off some truly impressive special effects. Check out the video below.