As you may well know, I'm a volunteer performer in the opening ceremony of the London 2012 Olympic Games. I know about some of the content of the show (much more than has been publicly announced so far), and if I weren't in it, I'd love to be there watching it.
I've devoted virtually an entire screen on my mobile desktop to core and third party widgets that allow me to quickly adjust phone settings, such as turning on wifi or turning off GPS. With this app though, I needn't have bothered. Quick Settings presents itself as a permanent ('Ongoing') selection in your Android drop-down notifications, and you can set it up to appear as a pop-up on top of whatever else you might be doing.