• 16th Annual Comcast Film Festival for NIH Charities

Where/When: The Universities at Shady Grove (9636 Gudelsky Dr., Rockville). Aug. 2 through 6, nightly. Restaurant opens: 6:30 p.m. Movie begins: 8:30 p.m.

Why go: See free movies shown outdoors over five nights on a 65-foot screen benefiting NIH Children's Charities.

Price: Free.

• Captured in Time: The History We Wear

Where/When: Glen Echo Park Partnership for Arts and Culture, Glen Echo Park Popcorn Gallery (7300 MacArthur Blvd., Glen Echo). Friday, Aug. 3, though Sunday, Aug. 5, from noon to 6 p.m.

Why go: The Glen Echo Park Partnership and SilverWorks present Captured in Time: The History We Wear. Jewelry becomes historical narrative with this collection of new works where artist-in-residence, silversmith, and jewelry designer Blair Anderson incorporates various relics into wearable art. Artifacts include Roman coins, dinosaur bones, a piece of the Space Shuttle Discovery and Christo's Gates. 

Price: Free.

• Afterplay and A Little Trick

Where/When: Quotidian Theatre Company (4508 Walsh St., Bethesda). Friday, Aug. 3, though Saturday, Aug. 4, at 8 p.m.

Why go: Brian Friel imagines a small cafe in 1920s Moscow where Sonya, Uncle Vanya's niece, is the only customer until the arrival of Andrey, brother of the Three Sisters. Afterplay provides a touching coda for two of Chekhov's most enduring characters. With Michele Osherow and David Dubov. Directed by Jack Sbarbori. Chekhov's short story A Little Trick is transformed into a succinct memory play in which the narrator tells of the young lady who might have been the love of his life. With Jonathan Feuer, Sara Dabney Tisdale and violinist Christine Kharazian. Directed by Stephanie Mumford. 

Price: $20 to $25.

• Historic Silver Spring B&O Railroad Station Open House

Where/When: Montgomery Preservation Inc. (8100 Georgia Ave., Silver Spring). Saturday, Aug. 4, from 10 a.m. to 3 p.m.

Why go: Historic Silver Spring B&O Railroad Station Open House. Guests: Riverdale Model Railroaders Club. HO scale modular layout featuring modern rail transport. These family events are sponsored by Montgomery Preservation Inc. and the Silver Spring Historical Society. Admission to building is free; a small fee maybe charged for special events. Air conditioned, gift shop, refreshments.

Price: Free.

• Old McDonald’s Farm

Where/When: The Puppet Co. (7300 MacArthur Blvd., Glen Echo). Saturday, Aug. 4, from 10 to 10:30 a.m. 

Why go: The animals on Old McDonald's Farm come out to entertain us. Al E. Cat introduces us to his barnyard buddies who will delight and amaze with their antics! The Tiny Tots program is designed for the youngest theater patrons, ages 0 to 4. The lights stay on, the doors stay open, and everyone has a great time!

Price: $5.

• Grown and Sexy Fridays

Where/When: 7926 Georgia Ave., Silver Spring. Friday, Aug. 3, from 9 p.m. to 2 a.m.

Why go: Enjoy a date night, friends’ night or girls’ night out filled with R&B and jazz music.

Price: $10.

• Saturday Night Round-Robin Doubles

Where/When: 11715 Orebaugh Ave., Wheaton. Saturday, Aug. 4, at 8 p.m.

Why go: Test your tennis prowess, meet new people and have some fun at Wheaton Indoor Tennis on Saturdays for Round Robin Doubles.

You'll play up to three pro sets (eight games per set; winners move up a court, losers move down a court) each night. No partner is necessary.

For adult (18 and up) players at Level 3.0 and up. Register online or call the front desk at 301-905-3030. Please register at least 48 hours before the event starts.

Price: $20

• Bowie Baysox Game / Rocknoceros Children's Concert / Family Campout Event

Where/When: Prince George's Stadium (4101 Crain Highway NE, Bowie). Friday, Aug. 3.

Children’s Concert: Concert gates open at 4 p.m. Children’s Concert begins at 4:15 p.m.

Bowie Baysox Game: Gates open to the public at 5:30 p.m. Baysox game time is 6:35 p.m. Fireworks are scheduled to follow the game.

Family Campout Event: Sleep under the stars at Baysox Stadium. Pre-registration required; visit http://www.baysoxshop.com for tickets. 

Why go: Campout, baseball game and firework fun for the entire family, with a concert especially for the kids!  

A special ticket package is needed for campout and concert. 

Price: Children’s concert: $12 in advance, $14 at the door. Family campout $10. Game: $7.

• Harmony Express Men's Chorus

Where/When: 11701 Clopper Rd., Gaithersburg. Sunday, Aug. 5, at 7:30 p.m.

Why go: Do you love to sing? Then come on out and sing with the men from Harmony Express! They are the 2010 Southern Division AA Champions and the 2011 Southern Division 2nd Place Chorus and Most Improved Chorus! Harmony Express is part of the Barbershop Harmony Society. All are welcome! Questions? Email Stacey Lynch at stacey_lynch82@yahoo.com. Find the group online at www.harmony-express.org.

Price: Free.