How can I save a Facebook video from their PR site to my Mac?
There is an extension that runs on Firefox that can easily snag that video.

I use Firefox 20.0 with http://www.ant.com/video-downloader

It does not work with Safari, but I've tested the Facebook link for you and it will get you the entire 2 GB video file if you have a fast network connection.



You will get an unsigned extension warning when installing the add-on, since the video downloader isn't signed by the developer. You also need flash player since it grabs the flash file.