The National Film Board of Canada just released its entire archive of 700+ films online for free:

http://www.nfb.ca/explore-by/title/

And they're embeddable!

Some of my favourites are already sifted:

http://www.videosift.com/video/The-Cat-Came-Back-1
http://www.videosift.com/video/The-Big-Snit-classic-Canadian-animation

...but there are many many more that are worthy of adding.