The Moto Proprio ("Which moto proprio?" you ask?) has spawned Hugh of Cluny is a Society, a Society located in Greenwich, Connecticut, dedicated to promoting the Traditional Mass in accordance with the Motu Proprio Summorum Pontificum. Click on this post to link to their site.
They have a nice set of photos of a mass for the Ascension at St. Saviour parish in New York (George Rutler's parish. I think it is John Neuhaus's as well.)