The Snake Game, however is worth trying next time you are caught-up watching a video that drags on, launch a game to pass the time.
The YouTube video of a plain black screen, are more recommended if you intend to try is out yourself, based on simplicity and astounding performance. And for videos with the new playback style (with red progress bar that narrows when you move the mouse away from it), click on the video window, then hold left on the keyboard.
The video can be playing while you do this or paused. Perhaps, you might find out that the game is not too boring to stop watching altogether.