A google search on youtube download produced 470,000,000 results, some of which should be useful. One of my favorites was to use a bookmarklet, one click of which used to add a download link in the youTube's movie page I was watching. Unfortunately, this bookmarklet ceased to work when youTube renovated its web site just a couple of weeks ago.
I will offer two solutions that work as of today:
- For Firefox users, install the following addon/extension
1-Click YouTube Video Download. Afterwards, when you watch a youTube movie, the page will have three links that allow you to download the movie in FLVMP4or 3GP formats.
- On a PC, download and install YouTube Downloader from http://www.youtubedownload.altervista.org/http://www.youtubedownload.altervista.org/. This stand-alone program asks you for a youTube page to download and is smart enough to get the page address as you do a copy [control-C] of the address.