How To Download And Save Youtube Videos

Just saw this on Digg.com. Finally, I will be able to save all those wonderful videos that I see on there, then cry when I realize I may never find again.

Such videos as "Dave chapelle on Oprah", "Juggernaut Bitch!", and all my Naruto favorites. Oh Lordie me. Definitely a good find! Someone remind me to add http://greasemonkey.mozdev.org/ to my rss feed list.