Warning: 2 minutes 38 seconds of un-productivity coming up. Don’t forget to link to this YouTube video (content) to your Facebook (filtering) wall: you might as well put that $2,700 that each of us cost our employers each year on Facebook, to good use. It’s 4:33am – the time of the morning when one stares crosseyed at Tetris and wonders what it would look like with humans raining down…