I don't believe there is any what-so-ever i am up-to-date with jailbreak status's for all Apple devices and havent heard a peep from anyone about ATV3 JB :( sadly i have an ATV3 too :(
this idea seemed pretty cool when i first saw it, but then thinking about it made me know you're lazy when you can't even pick up the phone and call... Lol
For our senior prank we did multiple things lol, 1st we broke windows in our portables outside.. then some seniors parked their cars around our Principal's car so he could Not get out for anything, AND some seniors spray painted around our high school "Seniors 2012" Freedom High Blows D***" LOL
Applications (Apps) can be useful at times for things such as directions, suggestions for places to go,etc. But there are in ALOT of occasions apps are completely pointless.