Which was the production company for XXX?
That's Dancing!
Jack Haley, Jr., who wrote, produced and directed the first That's Entertainment! film, also wrote and directed this one, co-producing with longtime friend David Niven, Jr. Haley's father, Jack Haley, had co-starred with Bolger in The Wizard of Oz. That's Dancing! was not included when the three That's Entertainment! films were released on DVD in 2004; it was instead released on its own in 2007.