HACKS:

I heartily endorse the Ook! plugin for firefox.

There is also a very easy way to save Youtube movies as flash videos, "TubeSucker - YouTube Video Downloader" Its easy, simple to use and best of all its FREE. I have tried heaps of ddl scripts, html source downloaders and "viewer-dowloader" programs.... All of them have given me nothing but headaches, hard time and wasted energy . TUBESUCKER is the one and only still remaining on my computer. Try it im sure you'll be impressed. http://www.newrad.com/software/tubesucker/

I use SaveTube to save youtube videos.

I download youtube videos http://www.youtubex.com is fast and simple to save youtube videos

Hope this helps...........

There is a even simpler, easier, yet more features program called zillatube - it downloads youtube videos in seconds and converts them to good quality windows videos format, and more. You can easily set the size and quality of the conversion.

If you want it, it's here -> http://www.zillatube.com

A nice online youtube downloader is here: www.dltube.eu

I use Get2pc.com with multi download

here is a great site i found to download youtube videos the url is:
http://www.vidmetro.com

I think E.M. Youtube video download tool is the best way to search,download,convert,repair and play any yotube video to PC,PSP,PDA,IPOD,iPhone,mobile phone,dvd/cd/vcd player,MP3/MP4,etc.
Get it from: http://www.effectmatrix.com/Youtube_video_download_tool/index.htm

I use http://www.down-tube.com , simple, fast and works well

I think if you Install the videodownloader extension. (which is a free plug-in for Firefox)
it will be easy to captrue stream video from internet like google youtube myspace
please check this way out here
http://www.aimersoft.com/tutorial/free-download-youtube-video.html

www.extractvideo.com - great site where you can search, view and download videos from YouTube, MetaCafe and Break.com

YouTubeRobot.com today announces YouTube Robot 2.0, a tool that enables you to download video from YouTube.com onto your PC, convert it to various formats to watch it when you are on the road on mobile devices like mobile phone, iPod, iPhone, Pocket PC, PSP, or Zune.

YouTube Robot allows you to search for videos using keywords or browse video by category, author, channel, language, tags, etc. When you find something noteworthy, you can preview the video right in YouTube Robot and then download it onto the hard disk drive. The speed, at which you will be downloading, is very high: up to 5 times faster than other software when you download a single file and up to 4 times faster when you download multiple files at a time.

Manual download is not the only option with YouTube Robot. You may as well schedule the download and conversion tasks to be executed automatically, even when you are not around. Downloading is followed by conversion to the format of your choice and uploading videos to a mobile device (if needed). For example, you can plug in iPod, select the video, go to bed, and when you wake up next morning, your iPod will be ready to play new YouTube videos.

Product page: www.youtuberobot.com
Direct download link: www.youtuberobot.com/download/utuberobot.exe
Company web-site: www.youtuberobot.com

A new graphical tool has become available for Linux to download youtube videos. It allows you to store as: avi, mpeg, mp4, flv etc... It also allows the user to specify preferred directory for videos to be stored. e.g. You can set it for your IPOD's video directory for the next time you synchronize with your IPOD video player.

Check it here:

http://yourtubedownloader.awardspace.com/

ExtractYouTube.com - free, fast and easy to use YouTube downloader

Video DownloadHelper is a free firefox extension. Just click on the icon when at your youtube video page, name the file(or leave default), and click to download. It treats the video as any other download so you can then move on and watch the video at a later time. I also use the open source VLC media player to view these, it works with every type of video format I've run into.

well seems like every one here advertising their own sites not dealing with wat this great post has ,,thought abt downloading without a third party.

I tried it but though for some reason it did not happen ..no pop up button came up for downloadin the Evanescence song for I know who killed me...

can u plz help with these..
this is the url of the vidoe I am talking abt:
http://in.youtube.com/watch?v=ol3Vy3lAs_k&feature=related

if u can figure out the bug do lemme some how my mail or sumthing...wud love to use a simple javascirpt instead of another software to downlaod videos..

If i havent mentioned it earlier i use Mozilla firefox 2

If you're using linux, then you can use this

http://ninjavoodoo.blogspot.com/2008/08/downloading-youtube-videos-in-linux.html

im using www.savevid.com.its very usefull tool.