i live in dunedin, new zealand, and the city claims to have the steepest street in the world (who know's if if it true)...they have running race up and back down it each year and other mad events. I've never ridden it but might give it a whirl at lunch time as i'm heading up that way for a ride today.

see this link for details... http://en.wikipedia.org/wiki/Baldwin_Street,_Dunedin

mike