try this
http://www.downloadyoutubevideos.com/ just put the link in there and ull be able to download enjoy theres other standalone programs but this is nicer cause u dont have to install anything, you just need to rename the file to .flv after u download and then play it with an flv player, if you dont have one heres a free one
http://www.videospark.com/index.php?sp=18