This is one great tool! Download your YouTube videos hasslefree and for free. Great job Techcrunch. Nice tool. Not overcommercialised (looking at you SEOchat.com).
To download a video to your computer, enter the YouTube URL for the video in the box above (example). It will be downloaded in flv format – use VLC or another compatible player to view it.
No stupid application to install (doesn’t work in Safari Mac though, does in Firefox Mac). Simple instructions.
Now that’s the way to do linkbait!

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That doesn’t work anymore! Lucky I have found a better one that gives me the videos in both MP4 and 3GP (mobile phone compatible) format. The techcrunch tool only lets you download in flv format which hardly any one wants.
In case anyone needs it: http://www.videodownloadr.com
I have found a nice tool to donwload my video http://www.live-downloader.com/
I found a very cool YouTube downloader tool:
http://www.clickyoutubedownload.com/
1-Click YouTube Video Download
You can download the firefox addon from here:
https://addons.mozilla.org/en-US/firefox/addon/13990
Seems recently most youtube downloaders have stopped working after youtube has disbaled get_video
If you use firefox, I just recommend DownloadHelper plugin. It can download most videos from almost all servers.