Aliasalpha: Oh I SO want Surface to be cheap and available quickly. Imagine how freakin awesome it'd be running an RTS via a massive touchscreen!
It would be hard to do, since the Surface thing is 180 degrees flat, making it hard to play a proper game, making it more suited to casual games of poker while ordering martinis in the bar, rather than a kickass DoTA machine. If it had an easel, I think it would be better. I have a Wacom tablet that I sometimes use for RTSes, allowing my to "draw" the squares and such. That's the closest I can think of.
Arkose: This is a rather strange announcement. Retail stores already act like Microsoft stores as such, but then again the idea has certainly been a success for Apple (albeit due in no small part to the vanity and hubris of a disturbing percentage of its "community"). It's also going to be nicely timed with the launch of Windows 7 to help promote the new OS to potential buyers (especially those who have arbitrarily jumped on the "Vista sucks" bandwagon).
A while back Microsoft organised
Games for Windows kiosks in some stores (I don't know if this is still the case), so the Microsoft store will probably take this to the next level with Crysis Wars or the like running at beyond-HD resolutions on colossal widescreen displays alongside HDTVs with the latest 360 games. I expect they'll also have a Media Center PC or two to demonstrate the entirely new Play To feature and the improvements to Media Center. I wouldn't be surprised if they even managed to throw in a multi-touch table thing for no adequately explained reason (running Windows 7, of course).
If nothing else, the allure of trying the latest 360 games for free is sure to bring foot traffic.
Yes, I've read about the kiosks in some old issues of PC Gamer, but I've never seen one in my life.