What Happens When Ben Pulls Punchbowl?

Warren Buffet said it would be the "shot heard round the world" when quantitative easing comes to an end. Many commentators have poured over various scenarios of how it could happen. What will happen afterward will surely become a matter of great concern to many investors. When Ben Bernanke pulls away the punchbowl and brings an end to quantitative easing, what will be the consequences for the stock market?