Synopsis: After a year's absence, entertainer Eddie Cantor returned to the screen in the self-produced Show Business. The plot is loosely based on Cantor's own rise to fame, from vaudeville to Broadway. Covering the years 1914 to 1929, the film reflects the changing tastes in entertainment, though Cantor (as in real life) steadfastly remains the same. Co-stars George Murphy and Joan Davis likewise borrow from their own showbiz experience in playing their characters, while Constance Moore, who was still in her playpen when Cantor was at the height of his Ziegfeld Follies fame, provides the standard love interest. Highlights include such Cantor standards as "Curse of an Aching Heart," "Whoopee," and "Dinah," the latter performed in blackface. The best ensemble number is a devastating satire of Grand Opera, with Joan Davis particularly amusing as a Wagnerian soprano. A few excerpts from Show Business were reused as "flashbacks" in the subsequent Cantor-Davis starrer If You Knew Susie (1948).