Let's Do It Again is a 1975 film starring Sidney Poitier, Bill Cosby and Jimmie Walker plus an all star black cast. The film, directed by Poitier, is about blue-collar workers who decide to rig a boxing match to raise money for their fraternal lodge. The song of the same name by The Staple Singers was featured as the opening and ending theme of the movie, and as a result, the two have become commonly associated with each other. This was the second film pairing of Poitier and Cosby following Uptown Saturday Night, and followed by A Piece of the Action. Although their characters have different names in each film, the three Poitier-Cosby pictures are considered to be a trilogy. Of the ... more on Wikipedia