Watch the Stars Under the Stars

Watch blockbuster movies on a 52-foot screen at the free Comcast Outdoor Film Festival starting Friday and continuing through Aug. 22 on the lawn at Strathmore Hall Arts Center, 10701 Rockville Pike, North Bethesda (Metro: Grosvenor-Strathmore). Grounds open at 6:30 for dinner and snack sales by area restaurants; the films roll at dusk. Vendor sales will benefit NIH Children's Charities. The lineup: Friday, "Star Wars"; Saturday, "The Lord of the Rings: The Return of the King"; Sunday, "Jaws"; Monday, "Casablanca"; Tuesday, " The Princess Bride"; Wednesday, "North by Northwest"; Thursday, "Seabiscuit"; Aug. 20, "Chicago"; Aug. 21, "Back to the Future"; and Aug. 22, "The Wizard of Oz." No tickets are required. Call 301-816-6958 or 301-530-0540, or visit www.filmfestnih.org.

Who Needs

A Laptop?

More than 200 exhibitors from around the world will display, buy, sell and trade vintage and contemporary fountain pens and other writing instruments at the 12th annual Washington Pen SuperShow Saturday and Sunday from 10 to 5 at the Sheraton Premiere Hotel, 8661 Leesburg Pike, Vienna. Testing tables will be available to sample 200 colors of ink and dozens of pen nibs. Admission is $6, ages under 21 free. Call 703-448-1234.

Tennis Tour

Stops Here

Five-time Legg Mason champion Andre Agassi is competing with Lleyton Hewitt, James Blake, Alex Corretja, Robby Ginepri and other stars during the 36th annual Legg Mason Tennis Classic. The men's ATP tournament begins Saturday and continues through Aug. 22 at the William H.G. FitzGerald Tennis Center, in Rock Creek Park at 16th and Kennedy streets NW. Single-session tickets cost $9 to $44, depending on the day. Discount and premium packages are available. To order, call Ticketmaster, 202-397-7328; for information, call 202-721-9500 or visit www.leggmasontennisclassic.com.

Montgomery County Has a Fair

The 56th annual Montgomery County Agricultural Fair opens Friday at 3 and continues through Aug. 21 at the county fairground, at Route 355 and Perry Parkway in Gaithersburg, with livestock displays, agricultural exhibits, concerts and other entertainment. Starting Saturday, the fair opens at 8 a.m.; midway carnival rides and games open at 10 a.m. The fair closes at midnight daily (last entry at 11). Admission is $4 Friday, $7 other days; ages 7 and younger free at all times. Call 301-926-3100 or visit www.mcagfair.com.

Celebrating a People

The 17th annual Kunta Kinte Heritage Festival celebrates African and African American history and culture Saturday from 10 to 8 and Sunday from 10 to 7 at the Anne Arundel County Fairgrounds, on Route 178 north of Route 450 in Crownsville. The Legendary Orioles, the Pan Masters Steel Orchestra and other musicians, choirs and dance troupes will entertain all weekend. Vendors will offer crafts and food specialties, and community organizations will staff a Family Education Tent with information tables and health screenings. Admission is $5, seniors and ages 4 to 12 $3, younger free. Call 410-349-0338.

Songs in Their Dreams

The Washington National Opera stages the world premiere of "The Enchantment of Dreams," an opera for children performed by the children in its annual Opera Camp for Kids, Saturday and Sunday at noon and 2 at Round House Theatre, East West Highway and Waverly Street in Bethesda (Metro: Bethesda). In the opera, three children explore their pasts and futures with "dream helpers" who visit them in their sleep. Composer Cary John Franklin and librettist Michael Patrick Albano, who also created "The Thunder of Horses," will talk about their work both days at 11 and 1. Admission is free, but reservations are required. Call 202-448-3465.

Martial Arts Showdown

Martial artists in all styles of karate and kung fu will compete in more than 300 divisions for all ages and ranks in the U.S. Capitol Classics International Tournament Friday and Saturday at the Crystal Gateway Marriott, 1700 Jefferson Davis Hwy., Arlington (Metro: Crystal City). Some of the divisions are for "extreme" forms, which permit techniques adapted from gymnastics, acrobatics and other sports. Competitions begin Friday at 5 p.m. and Saturday at 9 a.m.; a championship finals "Super Show" begins Saturday at 7:30. Tickets Friday are $10; on Saturday, general admission is $20, reserved seats $35, ringside $55 (ages under 5 free). Call 301-336-7000 or visit www.uscapitolclassics.com.

Rest of the Best

* Washington's National Aquarium, in the Commerce Department Building at 14th Street and Constitution Avenue NW (Metro: Federal Triangle), hosts its annual Shark Day Saturday from 9 to 5, with storytelling, interactive games, hands-on crafts and staff talks that highlight the role of sharks in the ocean ecosystem. The aquarium's sharks will be fed at about 2. Admission is $5, seniors $4, ages 2 to 10 $2, younger free. Call 202-482-2825.

* Costumed reenactors portray British and American troops on the eve of the Battle of Bladensburg during the War of 1812 Saturday from noon to 4 on the grounds of Riversdale House Museum, 4811 Riverdale Rd., Riverdale Park. The "troops" will fire cannons and conduct gunnery drills, and at 1:45 author Anthony Pitch will talk about his book "The Burning of Washington." Outdoor events are free. Tours of the 1807 mansion cost $3, seniors $2, ages 5 to 18 $1, younger free. Call 301-864-0420 (TDD: 301-699-2544).

* A free show by Ray, Goodman & Brown and the Impresarios Saturday at 8 closes the 2004 outdoor summer concert series at Fort Dupont Park, Minnesota Avenue and Randle Circle SE. No tickets are needed. Call 202-426-5961.

-- Compiled by Barry Barriere

"Star Wars" opens the free 10-night Comcast Outdoor Film Festival at Strathmore Hall.Artists will display their works at the Kunta Kinte Heritage Festival in Crownsville. A Delta Fluida,

on display at the Washington Pen SuperShow.