I wanted to download the Forging Titanium series from Vimeo to watch offline, but it was hosted on VimeoPro and I couldn't seem to find anything that would let me download the MP4.

After a bit of digging, I realised that VimeoPro is just another interface to Vimeo, and if you take the ID from a VimeoPro URL and add it to a normal vimeo URL it will show the video. e.g. http://vimeopro.com/appcelerator/forging-titanium/video/27447911 =>> http://vimeo.com/27447911

Once I had it in a normal Vimeo interface, it was easy enough to get a copy downloaded using KeepVid (make sure to use their bookmarklet, it's awesome).