I think the memorandum the President released the day after he got in office was a seminal event for the open government community in DC. This definitely kicked the train into high gear in way that had ripple effects both at the local level around the country and internationally. The memo was an organizing event that Sunlight pointed to in holding their first TransparencyCamp, as well for the various open government conferences later in the year. Without this, there wouldn't have been nearly the excitement or interest early on in this process. That said, I think the later Open Government Directive probably missed the mark of what was needed. Most seem to have taken this as "yet another unfunded OMB mandate" type thing that will pass as soon as the administration does.