Quirky by Tom B. at InsiderPages
This place has a quirky selection of architectural artifacts. I wish I were more thrilled with the selection and prices. Sorry, but $25.00 each for aluminum letters (about 6x6) isn't a great deal. It might be worth looking into if you are setting up house, but as a general place to shop or browse, you won't be likely to find many great deals.
Read more at washingtondc.citysearch.com
PROS: Occasionally interesting pieces
CONS: Some of the prices are, shall we say....ambitious