Thousands Cheer is a 1943 American musical comedy film directed by George Sidney and released by Metro-Goldwyn-Mayer. Produced at the height of the Second World War, the film was intended as a morale booster for American troops and their families. Plot The film is essentially a two-part program. The first half consists of a romantic comedy storyline involving an aerialist, played by Gene Kelly, who is drafted into the US Army but really wants to join the Air Force. During training, he falls in love with Kathryn (played by Kathryn Grayson), the daughter of his commanding officer, who has similarly put her singing career on hold in order to serve by providing entertainment for the troops. Unusually for this type of a film (and for this era of Hollywood), the character Kathryn has only recently met her father for the first time since she was a baby, her parents having separated but remaining married. A related subplot has Kathryn conniving to get her parents (played by John Boles and Mary Astor) to reconcile. During the first part of the film, Grayson sings several numbers and Kelly performs one of his most famous routines, dancing with a mop as a partner. The secondary plot involves preparations for a major live show for the soldiers which will feature many MGM musical and comedy stars. For the second half of the film, all pretenses of a storyline are effectively abandoned as the film instead becomes a variety showcase of comedy, song, and dance, with all of the performers (save Kelly and Grayson) appearing as themselves. The show portion is hosted by Mickey Rooney. Cast Guest stars Performing as "guest stars" in the film's show segment were: Judy Garland, Lena Horne, Red Skelton, Ann Sothern, Lucille Ball, Frank Morgan, Virginia O'Brien, Eleanor Powell, Marilyn Maxwell, June Allyson, Gloria DeHaven, Donna Reed, Margaret O'Brien, the Kay Kyser Orchestra and others. Pianist-conductor José Iturbi appears as himself in both segments of the film; this was his first acting role in a film and he would go on to make several more appearances (usually playing himself) in MGM musicals. Musical numbers Highlights included a performance of "Let Me Call You Sweetheart" by Kelly and a mop, "Honeysuckle Rose" by Horne and Benny Carter's band, a tap dance solo by Powell (making her first color film and her final MGM movie until 1950's Duchess of Idaho), Kay Kyser's