Spray Foam Insulation: The Intelligent Choice
Somewhat corny dialogue but lots of great shots of Sealection500 foam being sprayed. There is also a lot of good information about tricky areas to insulate and the application of spray foam in general.
Modern Marvels: Spray Foam Insulation
While the shots of the spray foam are fairly poor, this clip goes into great detail about how foam is made, its composition and its appropriate applications within a home.