There is some interesting discussion of Metro's plan to cut late night service at CommuterPageBlog, BeyondDC, and Rebuilding Place in the Urban Space. It seems to me that one of the best things that could be done to improve quality of life in the DC area would be to improve its rail service - both in hours of operation and geographic coverage. Metro will always have rush hour commuters as its primary clientele, but an urban subway system needs to provide other services as well.