You've probably seen one of these in nearly every spy movie you've watched. Then again, the trend nowadays seem to be more of bashing through walls than walking through doors (or in this case, cupboards.)
For $3000, you can feel the same sense of excitement. Of course, you could always convert a door in your office to this, and capture your visitor's epic moments. (and sell the footage to Just for Laughs to get some of your money back.)
More info here.
