Some might call it culture schlock. "Formidable," the Moulin Rouge revue, features a horse, topless dancers, jugglers, three crocodiles and La Toya Jackson, who rides a flying carpet above the Paris nightclub audience. Jackson sings " The Locomotion!' and, in phonetically learned French (she doesn't know the lingo), the Edith Piaf classics "La Vie en Rose" and "Non, Je Ne Regrette Rien." No wonder: for a year's engagement, Michael's sister (who, yes, stays clothed throughout) is reportedly receiving $5 million. For all that, she could invest in a new number, " Puttin' on Berlitz."