ThinkGeek :: TV-B-Gone:
"Enter the TV-B-Gone, a small television remote that hangs on your keychain and turns off virtually any television with the press of button. 'Now, what would be the purpose of such a device?' you may be asking yourself. Well, without revealing too much of our devious nature we can think of a few things. Imagine sports bars or annoying talking head shows that appear on monitors at the airport. Add to that your own creativity and we're pretty sure you'll come up with some ideas. All you need to do is press the button and keep pointing it at the TV until it turns off (which may take up to 69 seconds). The next 69 seconds will be spent quietly, or not so quietly, enjoying the perplexed expressions of the TV automatons."