For Download Videos From Youtube There Is Some Site Like:
1.www.keepvid.com
2.www.Clipnabber.com
3.www.vidoho.com
Just Paste The Link Of Video That You are watching In The Youtube In Above Site Bar And Click On Download Button. Keepvid Give You Two Format For Download.
Flv Format With Low Speed And Short Size And Low Quality
Mp4 Format For High Quality And More Speedy Connection.