Not sure this is possible, but I'm a real novice when it comes to anything video... You know how a lot of the networks are re-running their shows the next day on their web sites... How do I save what I am watching on my iMac or MacBook? I was just on the NBC site and watched a show that aired last night. Is there a way to download it simply from the screen (like copying a youtube video) so I could have watched it later or when I was traveling?