Design on Screen is a Denver-based film distributor with a leaning towards films highlighting the mid-century period in Colorado and California. Some previews can be seen on their site , But for the whole set go to Vimeo .
A good selection of video presentations by well-known architects.
A pile of well shot vids of younger U.S. architects and the like. These can also be found on YouTube.
A U.S. Public Broadcasting System program about sustainability innovation, with a particular focus on architecture