Don’t sit at home all weekend. Get out there and show ’em what ya got. SEE Home Movie Day What: Bring your 8 mm, Super 8, and 16 mm films for a screening at the Library of Congress, and learn how to preserve them while you’re at it. Why: Who wouldn’t want to see your summer at the Grand Canyon? When: Sat., 1-4 p.m. Where: Pickford Theater, Library of Congress, 101 Independence Ave. SE, b/t 1st & 2nd Sts. (202-707-1471). DO Face Reading What: Rose Rosetree offers a workshop on physiognomy at Be You Bi Yu Spa. Why: Can you judge a book by its cover? When: Sat., 10 a.m.-noon Where: 5602 Shields Dr., Bethesda (301-493-4911). Call to register. GO Montgomery County Agricultural Fair What: Pig races, cheese carving contest, horse shows, and the Veggie 500. Why: All’s fair in love and boar. When: Thru Aug. 19. Where: 16 Chestnut St., Gaithersburg (301-926-3100). BUY Meeps Moves What: The vintage boutique opens in its new location with DJs, door prizes, and diggable duds. Why: Meep! Meep! Zoom! Zoom! When: Grand opening, Sat., noon-7 p.m. Regular hours, Tues.-Sat., noon-7 p.m.; Sun., noon-5 p.m. Where: 2104 18th St. NW, b/t California St. & Wyoming Ave. (202-265-6546). HEAR Washington Social Club What: The favorite D.C. band returns. Why: Membership has its privileges. When: Fri., 9:30 p.m. Where: Black Cat, 1811 14th St. NW, at Swann St. (202-667-7960).