Jamie Reidy is a former US Army officer turned little blue pill pusher turned author. His first book, “Hard Sell: The Evolution of A Viagra Salesman” served as the basis of the movie “Love and Other Drugs” starring Jake Gyllenhaal. (Jamie really likes to type that sentence.) His latest book, “A Walk’s As Good As A Hit: Advice/Threats from My Old Man,” is a collection of humorous and touching essays about his father. In 2008, Harvard Business School invited Jamie to speak. He has not been invited back.