How to watch two YouTube Videos Simultaneously?

Here's some piece of multi-tasking; YouTube video viewing multi-tasking that is!Just head over to YouTube Doubler. Now what is that?YouTube Doubler Beta is a site that allows you to watch two different YouTube videos simultaneously in the same web page.So if you wanna watch two different videos at the same time,
just paste the video URLs of both the videos in the text boxes provided at the site and press the Double Up! button.There is nothing much to do after that. Just sit and watch the movies play.