In this week’s Ad Age Ad Lib podcast, we interview the chairman emeritus of DDB Worldwide, who tells us about his legendary 65-year history in advertising, including  why he pointed a cannon--literally--at Leo Burnett’s offices and the inside story of the “Big Bang” merger that created Omnicom (and why he had to keep changing rooms at The Palace Hotel.) Reinhard also discusses his admiration for Bill Bernbach, who he calls “the Picasso of the business," and tells us where he sees the ad industry going in the future.