Google Video is shutting down and all the video uploaded to it will go dark. R3Dux writes:

Archive Team are in a race to scrape as much Google Video content as they can before the viewing deadline (29/04/2011) and the download deadline (13/05/2011) – and you can help! Archive.org have kindly donated 100TB for storage, but first we need to index the videos and scrape them.

If you have a lot of bandwidth you can help scrape the videos themselves, but even if you don't you can help with the indexing effort by running a simple, resource and bandwidth light Linux script and just leaving it running!