The Carpenters: A Christmas Portrait was the second Christmas TV special that the pop duo made. They filmed this special in October of 1978 and was aired on ABC on December 19, 1978. The special stars Richard and Karen Carpenter, with special guests Gene Kelly, Kristy and Jimmy McNichol, Georgia Engel, and Peter Pit. The special is named after the Carpenters recently released Christmas album Christmas Portrait in October of 1978. (Wikipedia)
This (rather poor quality) clip from the television special, which includes Gene Kelly, was brought to my attention today via Twitter.