I've been using the Easy Youtube Video Downloader plugin for over a year now and love how easy it is to work with... that is, when either FireFox or Youtube hasn't just messed things up with some new update. That being said, I commend the developer for how hard he works to keep it going and updated for us all. Great Job Dishita!

I would recommend this tool for anyone who wants to save Youtube videos for their own offline viewing like I do.