I’ve been using Video Ook! Addon so far for downloading YouTubes and it has apparently stopped working.
UnPlug scans web pages and tells you where media players are getting their data from, and displays it as a simple hyperlink: in most cases, you can then follow the simple download link to save the media file.
UnPlug works for lots of sites including youtube.com, ifilm.com, current.tv, revver.com, peekvid.com, video.google.com, mobuzztv.com and lots, lots more.
Unlike many other extensions, UnPlug scans the page, and if it doesn’t know where the data comes from it can guess - correctly most of the time.
It worked flawlessly for me. After installing, the UnPlug fishy thigy 
will appear after the search tab on the Navigation Toolbar. Click on it to view links. Click Save to save to HDD.
UnPlug Add-on for Firefox INSTALL NOW
Visit Plugin page : UnPlug
That’s an excellent plugin. An excellent find. Now, all we have to do is find some quality tube videos to watch.
I do have a few, and I’m going to install the plugin now. Thanks a lot.
1Here is a nice web site where you can search, view and download YouTube videos.
http://www.ilikeyoutube.com/
Enjoy.
2I feel like a complete blank. Eh. I haven’t gotten anything done these days. More or less nothing seems worth bothering with. Not much on my mind lately. Shrug.,
3hai
4