This is what I’ve been saying all along, high-lighted by John Gruber:

Why not the same thing for TV sized displays? Imagine watching a baseball game on a TV where ESPN is a smart app, not a dumb channel. When you’re watching a game, you could tell the TV to show you the career statistics for the current batter. You could ask the HBO app which other movies this actress has been in. Point is: it’d be better for both viewers and the networks1 if a TV “channel” were an interactive app rather than a mere single stream of video.

Collect them in a Newsstand-like folder on iPhones and iPads, and make them the “home screen” of a future Apple TV.

Boom.