skot9000 got tired of trying to track down the closest location to buy a Muni fast pass and found their ZIPcode-based lists unreasonably hard to use so he, nice guy wot he is, mashed up the Muni DB with Google maps.
Et voila! Pop in an intersection or an address and a radius and skot9000′s handy-dandy mashup will fill you in on the places nearby that sell Muni fast passes.