I too had many fun, yet blurry evenings at the Door. Rumor has it that up until the late 80s it had sawdust floors.
Even though I no longer live within stumbling distance, I will always have a special place in my heart (or possibly my liver) for the Raven.
There is also the Quarry House tavern in downtown Silver Spring, an interesting subterranean place underneath Bombay Gaylord. I haven't been in a while, but if it is still around, Mickey's Patio Bar on 8th St SE in Capitol Hill was a pretty divey place. I remember having to wait for the Bartender to finish her poker hand before getting served on more than one occasion.