A double act (also known as a comedy duo) is a form of comedy originating in the British music hall tradition, and American vaudeville, in which two comedians perform together as a single act. Pairings are typically long-term, in some cases for the artists' entire careers. Double acts perform on the stage, television and film. The format is particularly popular in the UK where successful acts have included Peter Cook and Dudley Moore (Cook’s deadpan delivery contrasted with Moore’s buffoonery), Morecambe and Wise and The Two Ronnies. The tradition is also present in the US with acts like Wheeler and Woolsey, Abbott and Costello, Gallagher and Shean, Burns and Allen, and Lyons and Yosco. The British-American comedy double act Laurel and Hardy has been described as the most popular in the world. Format Humor is often derived from the uneven relationship between two partners, usually of the same gender, age, ethnic origin, and profession but drastically different in terms of personality or behavior; each one serves as a foil to the other. One member of the duo—the "straight man", "feed", "dead wood", or stooge—is often portrayed as reasonable and serious, while the other one—the funny man, "banana man", or comic—is portrayed as funny, less educated or less intelligent, silly, or unorthodox. When the audience identifies primarily with one character, the other is often referred to as a comic foil. The term "feed" comes from the way a straight man sets up jokes and then "feeds" them to his partner. Despite the names often given to the roles, the straight man is not always humorless, nor is it always the comic who provides the act's humor. Sometimes the straight man gets laughs through sarcastic reactions to the comic's antics, such as Stewart Lee's deadpan, reasoned reactions to Richard Herring's ridiculous antics in their pairing. When the straight man serves no specific comic purpose, but acts as a device to make the comic look good, he is known as a stooge. Sometimes considered a derogatory term, "stooge" began to fall out of use by the 1930s with The Three Stooges. Most often the humor in a double act comes from the way the two personalities play off of each other, rather than from the individual players. In many successful acts the roles are interchangeable. History Early development The model for the modern double act began in the British music halls and the