This DIY Wiimote-controlled Airsoft gun is a pretty impressive project with excellent sound effects. It'll move a full 180 degrees horizontally and has an auto mode to take out the ankles of coworkers.
The Airsoft pellet gun, in this case a 9mm replica, sits atop a Construx base and can be sighted with a webcam and aimed and fired with a Wiimote. It's like a mashup of our favourite things! [The Capacity]