Google just recently rolled out another service...
check it out:
http://video.google.com/videosearch?q=ipod
that thing is getting tons of press!
You can get some interesting results, but afaict you only get summaries of the results... no video.
Its still really cool, especially when looking for infomercials!
http://video.google.com/videosearch?q=paid+programming
http://video.google.com/videosearch?q=call+now+to+order