Looks great - imagine that it would be a perfect companion to something like sammy.js
However (and this is another conversation altogether), I don't think that you really want to structure your client-side application around faux-routes. Maintaining browser history with "hashchange" is important, but hardly the central aspect of a JS app. Usually you want to reserve history changes for special states that deserve to be bookmarked, not for every single action performed.
For the record, this is the little module that we use to record and listen for "hashchange" events:
All I'm saying is that you don't need to ape the server-side paradigm (one URL, one page) quite so closely. Use a module that gives you URL setting and tracking with "onhashchange", by all means, but you don't have to shoehorn your application into it.