Late advertising and media veteran Harold Mitchell was - by all accounts - a larger than life personality. He built and sold a business for hundreds of millions of dollars - and was never short of an opinion or a headline.

Damon Kitney, columnist at the Weekend Australian and author of The Fortune Tellers, talks to Sean Aylmer about the death of Harold Mitchell, the extraordinary businesses built around leaders like him, and what it means for a company and investors when success relies on a charismatic boss.