The OSRM Route Service Curl Sample Code demonstrates how to find the fastest route between coordinates in the supplied order. In addition to the general options, use the options available on OSRM that are supported for this service.
Gecko Landmarks is working on an easier way of giving directions. The theory behind their madness is that “everyone thinks in landmarks”. They took this idea and ran with it. In fact they have run all over the world with this idea. They have now collected landmark data for every country in the world. Most of this data is now available in the Gecko Landmarks API.
The non-profit built for "opening America's government" has created an app to show off its Congressional data, as well as its API (our Sunlight Labs API profile). You can't get this app on the web, though, as it's available exclusively for the Android phone platform.