Duccini's, sitting at the intersection on 18th and U St., NW, is perfectly situated for the waves of late night drunks filtering out of Adams Morgan and the U Street bars on weekends. But, it also happens to be my local neighborhood pizza place, and all things considered, it does a decent job.
Unfortunately, they only sell jumbo-slices (this is still DC), but the crust is neither too doughy or too crunchy, and retains a decent bite. The sauce doesn't taste too tinny and the cheese, while pre-shredded and processed, is eminently serviceable. While jumbo-sliced, I never got a soggy pizza, which is the main issue I have with the other establishments located further up 18th.
I would (and do) come to this place sober, which, for a DC pizza restaurant, is just about the highest compliment I can bestow.