Are You With It? is a 1948 American film about a young mathematician who quits his job to join a traveling carnival. The film is based on the novel Slightly Perfect by George MalcolmSmith and uses a screenplay by Oscar Brodney. The film stars Donald OConnor as Barker, Lew Parker as Goldie McGoldrick, Olga San Juan as Vivian, Walter Catlett as Jason Pop Carter, Patricia Dane as Sally, and Julie Gibson as Ann. Louis Da Pron, longtime choreographer at Universal, appears and dances as the bartender.
Source: Wikipedia