...able to leap over tall buildings at a single bound...

KeepVid.com  At my PD, I introduced the online program idesktop.tv, that allows the user to download and save YouTube and Teachertube videos.  Several of the participants mentioned KeepVid as a better alternative.  To all those of you who mentioned KeepVid, you are hereby awarded a virtual gold star.  Not only is it free and allows you an unlimited number of daily downloads but it is very fast.  Try it...you'll like it.

In the SSS watercooler, Ryan Dougher has detailed directions for using KeepVid with Safari.