The nice thing about Replay Media Catcher is that it can capture videos from youtube automatically. All you have to do is to play the youtube video and it will be saved to your hard disk.

But the best thing is that Replay Media Catcher renames videos downloaded from youtube. So instead of weird file names like "DE1npIIOUus.flv" you will get perfectly named files like "YouTube - How to eat with chopsticks". If you download many videos from youtube Replay Media Catcher saves lots of time.