A couple of times I have posted about video, just thought I would mention an excellent Firefox extension. There are a lot of Firefox extensions to help download videos but downloadhelper is the best it makes it easy to download video files. Before using this one I sometimes had to resort to analyzing network packets to get video on my hard-drive. AuntySue at the Chinesepod Cantonese forum pointed this extension out.
Just for example from Youtube you can get a few useful Mandarin learning resources.
You can find a lot of Chinese video websites that this extension is likely to work on listed on a Danwei post.