Poesy Power
Clémence Poésy is nervous. The 30-year-old actress, who hasn't done live theater in eight years, makes her Broadway debut this fall in Cyrano de Bergerac -- and the production isn't in her native tongue. "I'm terrified," she admits. In speaking to her further, however, one gets the feeling she'll manage. French by birth, Poésy speaks impeccable English (with a nonspecific British accent) and communicates a voluble…