The role of Sellers was acted by Geoffrey Rush, "who approached the role with the enthusiasm of a hungry child in a candy store", notes a reviewer. Rush impersonates most of the important characters that Sellers played in his film career. Director Blake Edwards is played by John Lithgow, and the film exposes some of the behind-the-scenes personality conflicts between Sellers and Edwards, which contributed to their unhappy and tumultuous working relationship, despite the success of their films. In the interview for the film, included on the DVD, Edwards credited Rush with portraying Sellers' characters with uncanny similarity to the real Peter Sellers, and in 2004 claimed that it was the best acting he had ever seen Rush perform.