Louis B. Mayer, King of Hollywood (1999)

Louis B. Mayer: King of Hollywood (1999) is a documentary film directed by F. Whitman Trecartin that takes a look at life of filmmaker Louis B. Mayer, who as head of Metro-Goldwyn-Mayer (MGM) studios, came to rule over movie stars. The film takes a look at the personal price that Mayer paid for that success.

More at Wikipedia.