What evil lurks in the hearts of waiters? Now you can find out. But can you stomach the results? An anonymous New York waiter wrote online recently: "In my fantasy, I become Darth Vader the next time a customer asks about the wines by the glass, then says, 'Merlot! Waiter, haven't you seen the movie "Sideways"?' Then I will slice off his head with my light saber." Grievances, including friction between kitchen and dining room staff, rapacious management and near-universal bitterness over tipping, are being revealed with gusto on the Internet by restaurant staff members. As a customer, to read...