Supermarkets, Microsoft and Middle Management

Business Weekly looks at the power of the mind. What's the psychology behind the layout of a supermarket? What are the pressures and mental stresses of middle management? And what are the best mind games to play in job interviews? Plus, the head of Microsoft, Steve Ballmer, tells us how the software giant is faring in these uncertain times. And fathering a genius - William Gates Snr recalls his memories of the adolescent Bill Gates Jnr.