Come on guys, keep this thread going, there's loads of interesting stuff on Youtube!
Keeping the British theme going:
The Lightning is my all time favourite aircraft... here's an original 1960's RAF recruitment video. Check out the music!
And here's a really cool TV advert that British Airways ran a couple of years ago:
And for our Canuck friends:
Here's a small series made by Bruce Dickinson (Iron Maiden's lead singer and airline pilot) about ten years ago covering the evolution of the modern airliner:
<- I lived most of my life pretty close to the airport the trainee 747 pilots are practicing landing at here. I used to see these aircraft tall the time.
Please guys feel free to add whatever you find interesting on Youtube!