Just wanted to say a big thank you to VideoDroid for making this simple Firefox (Mac) add on plug in widget thingy to save Youtube videos !
The low res version is free and great for low quality movies but if you want full HD 1080p then do donate (whatever you think) to download the add on.
Fast and efficient and most of all simple - it just adds the "Download" button to your html desktop web page !
Happy Christmas y'all ! :)