Sturmey Archer 2-Speed Kickback
I found this great review of the new Sturmey Archer 2-speed kickback - sounds like a great hub!
Sturmey's S2 kickshift hub didn't fare so well when it first hit the shelves in the 1960s, but 50-odd years on it makes a lot of sense for anyone that likes the clean lines of a singlespeed but secretly wishes the hills weren't so hard. And it's cheaper than many standard track hubs.
Read the full review: http://road.cc/content/image/32347-sturmey-archer-s2-kickshift-hub