If you're flying through Dulles you might want to do something that is against your better judgment -- go out of your way to get a long layover there and check out the airport's Vino Volo. This great wine bar is a wonderful retreat from the depressing grays of the airport carpets and never-ending walkways.
Designed like a wine bar that might get rave reviews if it just opened in San Francisco, Vono Volo takes you away from airport exhaustion--you might even enjoy a slightly longer delay in your flight. VinoVolo (meaning wine flight - nice airport pun), offers a nice selection of wines by the glass as well as by the bottle--at reasonable prices considering it's the airport, along with tasty small bites such as fresh smoked salmon warpped around crab. The staff know what they're talking about and are friendly and hip --so much so that the two women next to me who were very happy, spent a good bit of the evening flirting with one of them.
I started with a flight of bubblies, because we just finished our WinePasport: Bubbly, a friendly guide to bubblies around the world, complete with nifty pop-out map, and I'm a little obsessed with all things sparkling. From Austria I tasted Steininger's sparkling which is a mix of Chardonnay and Pinot Blanc from Austria ($36/bottle at Vino Volo). It was rich and delicious, perfect with the smoked salmon.
Another thing I loved about Vino Volo is that in addition to California wines and wines from around the world, they dedicated an entire flight of wines to Washington DC area wines--great local angle that also made being there feel like a real place as opposed to one of thousands of airport watering holes.
Wines are served on a little paper mat describing each wine with friendly tasting notes. Go visit! I can't wait until they open in other airports -- I may make my travel plans around that. Until then, visit them at Concourse C near Gate 4.