iPad app plays in sync with TV program

ABC has made iPad app for My Generation TV program. The thing I find interesting here is that app takes sync from sound. So it'll work even when watching recorded version (and of course even with pirated one). Maybe it's not revolutionary but I think the approach syncing with sound is quite nice because almost every device nowadays have a microphone. So the technique is really backwards compatible.

You can find more information from ABC's My Generation Sync site.