Have you ever wondered what an author – whose book you're reading – sounds like? You can always buy a book on tape to find out or now you can hear Jason's voice on the radio doing commercials for and endorsing Discover Business Card. "I've been asked to endorse many different products and services," says Jennings, "but this is the first time I've ever been comfortable endorsing a product. The Discover Business Card includes great tools for Cash Management, incredible cash back savings and dedicated service." The commercials are airing on hundreds of radio stations nationally.