This site came in very handy for saving a few google videos, so thought id share
Youtube vids you will need something like RivaFLV encoder to change from the flv format or the FLV player that comes with it
http://keepvid.com/
Youtube vids you will need something like RivaFLV encoder to change from the flv format or the FLV player that comes with it
http://keepvid.com/

VLC player will also play .flv files.