download clips from youtubeHow do you download clips from youtube onto the computer?

I am trying to make an awesome music video. Only, I dont know how to take clips from youtube and download them onto my computer.

Also, is there a way to take certain clips from a full length video (videos on megavideo or Videobb or something) and download them onto my computer?

any helpful information pertaining to the creation of music videos is appreciated.
You can use and yodownload clips from youtubeu can download videos from; YouTube, megavideo and so many more.
you can just mail me the name or the link of the video and I will mail you back a link to simply download the video in its best quality .
My email id is :
juliosanta11@yahoo.in

it doesn't even have to be a video if there is anything that you want to download just name it & mail me at the email address given above.
You Candownload clips from youtube use youtube downloader from here for downloading videos : http://download.cnet.com/YouTube-Downloader/3000-2071_4-10647340.html
I use Any Video Converter to download and convert youtube video. It supports to convert youtube video to many video and audio format. You can also trim the video length.

I use the GOM Picker plugin that's included with GOM Video Converter.