Quick and Easy Download App

Several weeks ago, I needed to be able to download movie clips and place them into a powerpoint presentation - which turned out fabulous, by the way. I'd post it here, but it's rather large, and mostly in Spanish, so I don't think there's an audience for it. But I digress...
I needed to these clips, mostly from YouTube, and so I went looking. I found a great application called Fast Video Download from Mozilla for Firefox. Most people I've talked to have complained that their downloading tools took a very long time. This one is speedy and has worked well for me. It gives several format options. (I use Quick time.) Check it out: https://addons.mozilla.org/en-US/firefox/addon/3590.