Download Flash and Video is a great download helper tool that lets you download Flash games and Flash videos (YouTube, Facebook, Dailymotion, Google Videos and more) with a single click.
Here is a little more about the add-on in question:
Download Flash and videos with a single click – the only download tool that is a video downloader and a flash downloader mix together. You can download any flash file on the web plus Flash games on Facebook or any other web site of Flash games. Compatible with DownThemAll and NoScript. The downloader is great for users who like to visit YouTube and download videos, or like to play Flash games on the internet and download them later.
Want to learn more? You can pick kup the Download Flash and Video add-on for Firefox from the Firefox Add-ons website.