AirPlay is one of the cooler new technologies Apple has brought us recently, and iOS 4.3 (coming March 11) will allow third-party apps full use of its wireless streaming capability, not just for audio, but for video as well. Apple is already busy approving apps that take advantage of AirPlay's video-streaming capabilities. For example, StreamToMe allows you to stream from a Mac or a PC to your iOS device via Wi-Fi or 3G.
In theory, you should be able to send your music and pictures from any app to your Apple TV over AirPlay, but according to GigaOM, it seems that
