There is a group of ladies who work in the accounting department at my job who have made it their mission to decorate the cubicle of whoever has a birthday on a given day. They come in at 6 am on someones birthday and decorate, leaving a mess of balloons and streamers, which is a nice surprise the first time it happens (they do it every year). Well, we in the IT office decided it would be fun to booby trap one of our cubicles so that when our birthday rolled in, they would receive a surprise of their own. So we set up a webcam as a motion detector, and had the computer speakers turned up as loud as possible, so that when motion was detected, the honorable Admiral Akbar would yell "It's A Trap!". We succeeded in scaring the pants off of them, and also annoying them because the sound did not stop until the program was exited, so they had to listen to it the entire time they did their setup. It was priceless xD

Programming by candlelight (although the monitors are in standby.😇)