They have a table with some model terrain on it (i.e. a miniture fort, a hill etc) and there is a camra pointed at the table.
They are then driving a car around and over it by a joypad on a tv. The car interacts totally with the environment on the tv – for instance there is a spinning door which actually dumps the car out of the way…
Poor description :)
Get VLC or MPC and they should be able to play it!