(United Artists, 1970). In this rarely-seen documentary directed by Michael Lindsay-Hogg, the Beatles are shown rehearsing songs for their album “Let it Be” at Twickenham Film Studios, followed by an unannounced concert on the rooftop of their Apple headquarters in London. Starts at 7:30 p.m. Free, at the Library of Congress Packard Campus Theater located at 19053 Mt. Pony Rd. in Culpeper, VA. No reservations required. For more information, call 202-707-9994.