does this help:
http://youtube.com/get_video?video_id=aeTc...3izUz5rnmTpaGC8
(save as *.flv) :P
and as for how:
get firefox
get the "greasemonkey" extention
install
this script
and then go to a video on youtube and there should be a red bar on the page now saying:
"Save As" To Download Video
right click on that and select "Save Link As..."
p.s. sorry for doublepost (tried editing post but it screwed up
)