I think they would be great for sports bars
According to the U.S. Census Bureau, there are about 250 million television sets in the U.S. and we can guess that the majority of them are turned on a lot of the time. All in all, this is not bad (heck, we enjoy a good movie as much as anyone else) but there are some occasions when you just need to do everyone a favor and turn the TV off. A certain portion of television content is just plain questionable and about as healthy as second-hand smoke.
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.
http://www.thinkgeek.com/gadgets/electronic/755e