Hey
I personally don't advise any of those YouTube Grabers. However, if you insist, just go to http://www.softpedia.com and in the search box type "YouTube". There are loads of software to grab videos from Youtube.
However, there's one drawback (minor anyway). The videos downloaded from youtube are in the FLV format, and our regular media players like Windows Media Player, iTunes, QuickTime etc DO NOT play FLV videos. In fact, you have two options. Three, actually. Download the video from YouTube by using a YouTube Download site - http://keepvid.com or http://javimoya.com are easily the fastest in processing. Then:
1. Download an FLV player - http://www.tekool.net OR
2. Find an FLV converter software. There is a drawback with this one too - it may convert to AVI which is readable by Windows Media Player, but if you don't have some DivX Codec, you won't see any video, but you'll hear the sound. OR
3. And this is the one I personally recommend - get the URL of the video from YouTube, then go to http://www.convertdirect.com and paste it. Then select the format you want your video to be converted to - you can get 3gp for your mobile phone or even WMV - Windows Media Video. Then click Convert. It converts really quickly (and don't think I have a good internet connection) even with my kind of internet connection. Then click the download link. Another reason why I like this is that the videos to be downloaded can be downloaded with your download manager and if you have a thing for download managers like me because they make downloading feel more secure, you can go for this one.

Let me know what you choose. Ciao.

Tayo

hey thanks so much man, i'll just try out your suggestions already