YouTube as Casual Gaming Platform?
Give it a whirl. The game enables you to interact by sending you to a new video every time you take an action, like picking a character or choosing to kick or block.
It's a fractured and disjointed experience, and you'll probably only play it once, but it brought to mind that Wario Land: Shake It! thing and reminded us that even when you think you know a medium, some innovative mind will turn it into something totally different -- opening opportunities for both the medium to evolve, and for creatives to take advantage.