Buddy Buddy is a 1981 American comedy film directed by Billy Wilder that stars Jack Lemmon and Walter Matthau. The screenplay by Wilder and I.A.L. Diamond is based on the 1973 French language film L'emmerdeur, which screenwriter Francis Veber had adapted from his play Le contrat.The film proved to be the last directed by Wilder, who in later years said, "If I met all my old pictures in a crowd, personified, there are some that would make me happy and proud, and I would embrace them . . .