Remember the Stir Kinetic, that $3,890 smart desk we showed you last fall? You know, the sleek-looking one made by someone who used to work on Apples iPod team? Yep, thats the one. In any case, its about to get a few more features to help justify that insane price tag. Stir just announced that the desk will now integrate with Fitbits fitness-tracking platform, allowing you to tally up all the calories youve burned while standing.