YouTube Downloader

me: And when I use the YouTube downloader program...

Mike Hammer: What do you use?

Strangely enough, "YouTube Downloader."

Annoying in installation because they have "accept/decline" choices that look like you're agreeing to standard usage rules when you're actually agreeing to, like Yahoo toolbars, but once installed, works great for YT, Vimeo, many other sources (including many that - ahem - I don't want).

Pay-for version has a few enhancements I've never felt I needed. They've just added ads showing on the latest upgrade of the free version, but, well, good for the authors yay capitalism, and still free for me.