D.C. may not have the kind of diner culture that one finds in New Jersey or on Long Island. But look deeper, and the city and its surrounding areas still have plenty of greasy spoon standouts, some of which have stood the test of time for years. Here's a roundup of 25 important ones to note, whether for their historical status, late night hours, no-frills food or interesting quirks. Have another favorite greasy spoon? Share it in the comments.