In addition to his short films, French comic filmmaker Pierre Etaix made only five movies – and three of them, along with a pair of shorts, are presented tonight in this generous introduction to the works of one of France’s most acclaimed, and least known, cinematic clown princes. Yo Yo, from 1965, opens this TCM retrospective at 8 p.m. ET, telling the story of a wealthy man who has everything but love. In 1968’s Le Grand Amour, at 10 p.m. ET, Etaix stars as a happily married m