I have watched videos on both Youtube and on Google Video. My personal experience has been much better on Youtube. The interfaces are almost identical but I find the video from Google constantly interrupted — stop and starts. Happens almost always on Google video but almost never on Youtube (I don’t think it has anything to do with the Internet connection because I have tried both using the same internet access). There is no question that Youtube has far more videos than Google Video. As for Yahoo Videos, its not worth talking about at this point!