Excellent Apple TV/iPanel Concept Video [Watch]
Check out this excellent concept video by Sam Beckett that details how an Apple television might work.
The overall idea of the concept demonstrates how an iPad or iPad Mini could be paired, (via bluetooth) to an Apple TV set-top box or TV screen panel. User input would either be by multitouch (on the tablet), or with Siri voice commands.
The video talks through how interacting with the television would work. Take a look below.
More details on the concept can be found here.