Jean-Marc Généreux (/ʒɑ̃-maʁk ʒeneʁø/; born December 25, 1962) is a French Canadian ballroom dance champion, choreographer and television personality from Longueuil, Quebec, Canada. He is most prominently known for his roles as judge and choreographer on the American and Canadian versions of So You Think You Can Dance, the French version of the hit television series Dancing with the Stars, and TVA’s hit dance competition series Révolution.
Source : Wikipedia
