FVD Suite anybody? It works great. Also if you're using Firefox check out Video DownloadHelper, you can easily find it her https://addons.mozilla.org/en-US/firefox/extensions/?sort=users
the second one at time of posting this comment. Free Download manager works amazing, unfortunately the plugins for browsers are fairly limited, http://www.filehippo.com/download_firefox/11293/
this is the build of Firefox i'm using right now with it. I really don't use anything else on Firefox. It isn't limited to YouTube (referring to FDM) either, pretty much any flv file, and it can also monitor all downloads so if you have something against Firefox 9 downloader, problem solved. It also has a somewhat unique downloading format, it downloads as if everything was a torrent, hope this helps everybody/anybody
By the way, if you use any of these methods and know something I didn't mention i would love to hear it.