i have found some great software that allows you to convert youtube files into mp3 format. so if you found a video of a song you liked (even if it has a video) you can convert it so it can be played on itunes, windows media player and can transfer to your phone/ipod/psp etc. http://www.dvdvideosoft.com/products/dvd/Free-YouTube-to-MP3-Converter.htm no personal details required, just download and its there.
If I want to download a video i just use this website: www.clipnabber.com. I got soccer rocks off there
not worth it. Download Super and it will convert any file into practically any format you want (as well as extracting audio from video). It's the best conversion program out there. Anything else is inferior. If you want to teef videos off youtube, just use zamzar or File2hd (the latter will also take audio tracks from Myspace)