NASA Uploads Hundreds of Rare Aircraft Films to YouTube (paleofuture.gizmodo.com)

They're uploading the films which have been all be freely available at https://www.dfrc.nasa.gov/Gallery/Movie/index.html for many, many years.

That said, it's a great collection, I remember spending hours downloading single Jpegs because of how high resolution their original scans are. (This was back on dial-up, which gives you an indication how long this site has been around!).

Direct link to channel: https://www.youtube.com/user/DrydenTV/playlists

The video of the M2-F2 oscillations is pretty crazy, especially the cockpit view: https://youtu.be/TdvYuFqE3JI?list=PL7b4vf55aQl3wOj-Y6TUxj2Lp... Test pilots are a breed of their own

And talking of crazy, the X-15 never disappoints https://youtu.be/CIR-B966Dis?list=PL7b4vf55aQl2NTGkbAKWxW4NZ...