There's a big antique store on Route 1, way south of Old Town, and past the newish Costco.

See my giant list in this thread:
http://www.dcurbanmom.com/jforum/posts/list/431417.page

Savvy Consignment in Severna Park.

Chartreuse & Co. in Frederick
http://chartreuseandco.com/

There's an interesting antiques place on Rt. 28 south of I-66 heading towards Manassas. It's kind of dingy looking from the outside, but you can find some nice things if you're willing to look carefully.

Stifel and Capra or Antique Annex in Falls Church

Goodwill in Arlington, near route 50

don't know about "real finds" but Kensington has a small "antique row." You'd be able to peruse fairly quickly.

Any Goodwill or SA place. Real antiques are all over, but there are tons all in one place along Conn Ave. in Kensington.
Also try eBay or Etsy.

There is the Goodwill on Boiling Brook Parkway.

I want to find interesting things for my home that aren't in everyone else's home. I tried that Luckett's place, but it seems to cater to the snooty with prices to match. I am looking for the kind of place where there are real finds. Thank you!