Michael Simonsen, CEO of Altos Research, a Mountain View, Calif. real estate research firm and the proprietor of his own widely read industry blog How's The Market?
"He was always a busy man, " Pier Silvio Berlusconi says of his 73-year-old father, who besides being the Italian head of government, is also a billionaire media entrepreneur, real estate and insurance tycoon, bank proprietor, sports team owner and song-writer.