Also at the Library of Congress is the Pickford Theater , where they show a series of films around a variety of themes. This year’s themes include Blaxploitation films, the National Film Registry, Musical Remakes and John Carpenter – The Beginnings. Reservations may be made by phone, beginning one week before any given show. Call (202) 707-5677 during business hours. Reserved seats must be claimed at least 10 minutes before show time, after which standbys will be admitted.