Sturmey Archer is claiming (last I read, at least) a "late second quarter 2010" release date for their S2C hub, a modern two-speed kickback coaster brake hub. That gives you the option of two change on the fly speeds without having to run any cables or derailleurs, and you can even ditch your rear rim brake and the associated cable. Sounds like a fun gadget to me, although I can't say how they'll compare to the vintage stuff on quality or price.