Jessica Biel swung by the Late Show studios in NYC last night to chat up her new movie, Hitchcock, with host David Letterman. She's had a busy few days of press for the film, which is out on Friday. Jessica granted interviews at a junket all day Sunday, then donned an Oscar de la Renta pantsuit to attend the premiere that night alongside costars Helen Mirren and Scarlett Johansson at Manhattan's Ziegfeld Theatre. For her chat with David, Jessica donned another bold look in a Roland Mouret dress. She recalled a nightmare spa night in which she saw some "husky" guys relaxing nude in a sauna. Jessica told of her horror to see "balls on wood."