Thanks for sharing. I recently passed on this same tip to a member as well.
There are quite a few different Firefox add-ons for video. My favourite is this:
https://addons.mozilla.org/en-US/firefox/addon/3006
If you don't have firefox, you can always use a web-based service like:
http://www.savevid.com
In either case, make sure you choose the higher-quality versions of the video (mp4) if they're available.