If you want to get to Oprah Winfrey, you've got to go through her BFF first. That's the lesson Piers Morgan learned before nabbing the talk-show titan as his debut guest on CNN's "Piers Morgan Tonight." "I had to seduce Gayle King by e-mail, which I did very successfully for a sustained period of time," … Continue reading Piers Morgan: I seduced Gayle to get Oprah