Some of you will be using one of Michael Dell's products right now as you read this. He co-founded Dell Computers, and has been the mastermind behind their growth into one of the leading IT companies on the planet.
His wife, Susan Dell, doesn't get involved in her husband's business. Instead, she looks after the Michael & Susan Dell Foundation, ensuring that some of their jointly-owned $20bn fortune goes into improving healthcare and education access for some of the world's poorest children.