Slapstick films involve exaggerated, boisterous action to create impossible and humorous situations. Because it relies predominately on visual depictions of events, it does not require sound. Accordingly, the subgenre was ideal for silent movies and was prevalent during that era. Popular silent stars of the slapstick genre include Buster Keaton, Charlie Chaplin, Roscoe Arbuckle, and Harold Lloyd. Some of these stars, as well as acts such as Laurel and Hardy and The Three Stooges, also found success incorporating slapstick comedy into sound films.