Google Places gives all business for a given location and radius (you can then grab expanded listings of whatever's found), but not specific businesses like coffee shops, however this kind of functionality will probably come soon, and for server side lookups.

The closest Places gets now to a specific lookup for a business in a certain location is just on the client side after manual keyword entry, using the GoogleBar: http://code.google.com/apis/maps/documentation/javascript/v2... (type coffee)