Add a level of realism to your video games with the ButtKicker Gamer. This low-frequency transducer attaches easily to almost any home or office chair with a center post, allowing you to experience powerful bass and realistic special effects through your entire body without turning up the volume. Works with all popular game systems, and it also connects easily to iPods or other digital music players.
Source: Smarthome
Looks like a great way to scare the crap out of your co-workers. Just mount this high and out of the way on their chair and crank the tunes when they least expect it. 🙂