I know how it feels when you are addicted to youtube and have no option to download your favorite video. Would’nt be nice to have these youtube videos on your computer. Now I will tell you how you can download your favorite youtube videos.
Alright the trick is to download them via a third party website keepvid.com, which offers you to download the videos in different qualities, such as
3gp
flv
mp4

All the download links can be resumed any time, and are supported by download accelerators, so you can download videos faster and at high speed.

Attention:
Please check out the copyright law in your country when it comes to downloading YouTube videos.