An awesome CBC radio show about advertising, used to be called Age of Persuasion, now called Under the Influence, but basically the same show. Hosted by an advertising creative guy. Filled with interesting unusual facts, plenty of history, a good dose of psychology, and good story-telling. I can't recommend it enough. Ironically, I hate advertising and do anything I can to avoid it, yet podcast this show religiously.
Podcasting - CBC.ca
Podcasting - CBC.ca