Going Ape! (1981)
Going Ape! is a 1981 comedy film directed by Jeremy Joe Kronsberg and produced by Paramount Pictures. The original music score was composed by Elmer Bernstein (who would later composed music for a later similarly ape-themed comedy Buddy). This film starred Tony Danza as Foster, Stacey Nelkin as Cynthia, Jessica Walter as Fiona, Danny DeVito as Lazlo, and three orangutans. The film was nominated for a Razzie Awards for Worst Supporting Actor for DeVito.
More at Wikipedia.