B.C.
It's an area that can vary by quite a bit depending in which direction you go.
Harris Teeter often has free cookies similar to your Stop and Shop.
I moved away from Sterling Va 7 years ago.
I miss some things but I'm not missing the traffic at all!
Fun places to check out with the kids:
Frying Pan Park
http://www.fairfaxcounty.gov/parks/fryingpanpark/visitorc...
Claude Moore Park
(We loved this park - we lived around the corner from it and went there all the time just to take walks - technically in Loudoun county but it's so close it makes no difference).
http://www.loudoun.gov/index.aspx?nid=1285
Algonkian Regional Park
(Nice way to take a look at the Potomac river - they have a little water park there too)
http://www.nvrpa.org/park/algonkian
Leesburg - check them out for 4th of July and for their Halloween Parade
Reston Zoo
http://www.restonzoo.com/
The Water Mine and Lake Fairfax Park is close to the Reston Zoo:
http://www.fairfaxcounty.gov/parks/volunteer/watermine-vo...
Leesburg Animal Park
http://www.leesburganimalpark.com/
In the fall Temple Hall Farm Park has a great corn maze:
http://templehallfallfest.com/
Don't forget the Udvar-Hazy Air and Space Museum Annex
http://airandspace.si.edu/visit/udvar-hazy-center/
Near Christmas time check out Juniper Street in Sterling Va for some pretty neighborhood light displays.
There's really a lot to do, you won't see it all at once.