I found this site which distributes video stock footage. They do have some marvellous clips there and I am sure many websites can spruce up their image if they get one of those video relevant to their industry.
For example, if you have a site that deals with wild animals and jungle safari, maybe you will want a video footage related to that to impress your site visitors. I feel this will be money well spent. Moreover, you save a lot as you do not need to hire your own camera crews to go out there and take the videos. All the videos there are superb and just nice for display on websites.
Hmm...let me see if they will buy videos I made? I bet I have some informative videos in my libray which I can dispose off.