If Natal works, there's tremendous applications in terms of interactivity at work. How about we leverage this stuff for "Minority Report" type interfaces with 50" flat screen TVs? How about rear projection? Imagine collaborative picture or movie editing over the net? Can stuff like this be leveraged for pair programming? How about animated CRC cards which can execute and animate their functionality? Such things have been possible for awhile now, appearing in places like TED. Natal and the dropping price of big TVs can make them easily accessible to small and mid-sized companies.