If you guys like those movies, I suggest you check this site out:
This site is like a public library of historic multimedia. Here's what they say about their site:
"The Internet Archive is a 501(c)(3) non-profit that was founded to build an ‘Internet library,’ with the purpose of offering permanent access for researchers, historians, and scholars to historical collections that exist in digital format."
Its all free. There are old newsreels of airports, airplanes, old airline ads, educational movies on air traffic, pilots, etc, etc. Be patient with your searches, but I can say it will be worth it. (If you like old cartoons or even Little Rascals movies, there here too! There's also a great library of audio stuff, songs going back to the late 1800's.)
Here are two cool files I found recently. Both are downloadable in multiple formats (including mpeg4, and they are now on my iPod video!) Quality of the National commercial is pretty poor, but its free! These two movies are relatively small, most of the good movies are 35-50MB.
Enjoy, and let me know what you think.