After walking down to the new Taylor's Gourmet near 19th and M Street, NW, and seeing a ridiculously long line, I wandered back up 19th Street towards my office. There's a newish sandwich shop called Carvy.
Turkey, bacon, lettuce and tomato with spicy mustard on rye bread.
They hand carve the turkey and pile on a bunch. The rye bread is not as good as the one over at Axian, but the turkey meat was still nice and juicy.