Ellen Greene is an American actress and singer. She has had a long and varied career as a singer, particularly in cabaret, as an actress and singer in numerous stage productions, particularly musical theatre, as well as having performed in many films and television series. Her best-known roles are as Audrey in the original stage play and movie adaptation of Little Shop of Horrors, and as Vivian Charles in the ABC series Pushing Daisies.

A nightclub act is a production, usually of nightclub music or comedy, designed for performance at a nightclub, a type of drinking establishment, by a nightclub performer such as a nightclub singer or nightclub dancer, whose performance may also be referred to as a nightclub act. A scheduled performance, such as a wedding gig, is a club date.