William Keighley Director Al Jolson Al Jackson Actor Allen Jenkins Joe Eddy Actor Sybil Jason Sybil Haines Actor Lyle Talbot Robert "Bob" Carey Actor Frank Mitchell Dope Actor William B. Davidson Barney Hammond Actor Edward Keane IRS Agent Potter Actor Tom Manning Stage Doorman Actor Wini Shaw Blackface Singer Actor Edward Everett Horton Davenport Rogers Actor Beverly Roberts Ruth Haines Actor Jack Durant Babe Actor Joseph King Dr. May Actor Joseph Crehan IRS Agent Fulton Actor Claire Dodd Dana Lawrence Actor Kay Hughes Actor Jonathan Hale Dr. Brown Actor