A. J. Rathbun, author of CHOW-approved cocktail books Good Spirits and Luscious Liqueurs, demonstrates the proper way to shake a cocktail: up and down in front of your body. Leave your Tom Cruise flair back in the '80s. The exception to the rule is when you're shaking raw egg cocktails, in which case you start slow and speed up. Rathbun's most recent book is Dark Spirits.