Chick-fil-A, Inc. issued a letter to the Burger King Corporation complaining about Burger King's copying of elements of Chick-fil-A's long-running and well-known "Eat Mor Chikin" advertising campaign. In Burger King(R)'s recent advertising spots promoting the movie, Chicken Run, Burger King is using animated chickens and asking its customers to "Eat More Beef" -- directly mimicking Chick-fil-A's award-winning advertising campaign in which cows plead "Eat Mor Chikin(R).