Business school or school of life? An MBA from a top business school is what defines many of today's high powered CEO's - but is the qualification worth the cost or are would-be entrepreneurs better off learning business acumen in the real world? Evan Davis debates with guests. Guests: Colin Drummond, Chairman of Viridor and Harvard MBA graduate Kim Winser, former CEO of Pringle, now CEO of Winser London Glenn Sykes, Associate Dean of Chicago Booth Business School, London

Successful TV formats like Big Brother, Pop Idol, X-Factor and Who Wants To Be A Millionaire are sold and broadcast all round the world, netting their creators billions of pounds. But how can you protect such a valuable asset? And are too many copycat versions saturating the market and crushing original ideas? Evan Davis finds out from those at the top of the lucrative global industry of TV formats.