YouTube introduced a new feature that allows you to easily cue up your favorite viral video to just the spot. All you have to do is find the precise moment, pause the video, and then right click on it. A dialog box pops up offering you the option to "Copy video URL at current time." Click that and the link that goes to your clipboard will automatically cue up the video to the correct moment.
For example, this link will send you right to the awkward moment when Regis tells rapper Nikki Minaj that he "loves" her CD. Or you could put it to a more serious purpose, like cueing up the moment when Stephen Colbert explained the invisible hand of the market to Congress.