I don't know of any current app that will allow that. However, I have submitted a request to Apple that they enable this feature on the iPad 2. I can't think of any reason why it wouldn't work. Perhaps Apple could sell more Apple TVs this way!
I hear the more request for a feature Apple gets, the more chance there is that they will consider it... Just sayin'.
Well, if I am reading this MacWorld article right, then we got it! (http://www.macworld....11/06/ios5.html). To quote from the section entitled: "There's More!" the author says:
"According to Forstall, those are just a sampling of new features in iOS 5. He showed a slide packed with several others, including AirPlay mirroring to your Apple TV."
I believe the context of this when it was shared at the WWDC keynote was EVERYTHING on iPad is mirrored to AppleTV.
Anyone have any additional information on this?