Another day, another entrant in the DC/NYC bus market: "The KnowIt Express (http://www.tbd.com/blogs/tbd-on-foot/2010/10/hipster-highway-new-shuttle-service-to-run-from-u-street-to-brooklyn-3081.html)". This one has decided to carve a niche of sorts, running between U Street and Park Slope, Brooklyn to cater to 20/30-somethings who are bound for the two places.
If anyone here wants to crack a "Hipster Express" joke, Price of Petworth beat you to it (http://www.princeofpetworth.com/2010/10/new-bus-line-u-street-to-brooklyn-launches-on-friday-october-22/). I hope this niche works out for them.