Did You Know: "Magic Bullet" theory of JFK assassination

I'm watching PBS as I work, watching a show called Oswald's Ghost, and I was surprised to learn that the person who first proposed the theory that was later derided as the "magic bullet" theory was the Ranking Member of the US Senate, Sen. Arlen Specter (R-PA). If you don't know what the "magic bullet" theory, you have to watch Oliver Stone's brilliant movie, JFK, starring Kevin Costner and Tommy Lee Jones.