YouTube user kss5095 decided to get creative and show his love of video games at the same time with his final project for Advanced Mechatronics at Penn State, so he built a fully functioning turret like you'd find in the video game series Portal.
The turret is so sweet that it even has a soothing voice recording, which lures you out of hiding so it can blast you with laser guided NERF missiles.
This guy has a long career ahead of him in either animatronics or engineering weapons for the military, but for now he has the ultimate home defense system at his disposal, that is once he upgrades to live rounds!
--via Geekologie