(NEW YORK) — It was, Alec Baldwin said, “like something out of Hitchcock”: He waits in the wings of a Lincoln Center stage before a movie-screening discussion. He looks out to see his tormentor in a front-row seat. She turns to him. And smiles. That was one of several scenes in a personal drama the “30 Rock” actor described Tuesday, as the star witness against Genevieve Sabourin, a small-time Canadian actress charged with stalking him.