If you're looking to see the most popular YouTube videos of the week, look no further.
Once again, we're bringing you the week's most-watched videos, hot off the charts via YouTube Trends, a feature launched by YouTube that aggregates the site's video stats and draws upon "the wisdom of top curators across the web" to offer visitors a look at real-time trends among the YouTube community.
So what did the web go wild over this week? Google's April Fools' Day prank, Britney Spears's lost "Jackass" appearance, famous physicists' epic rap battle--and much, much more.
Watch the 9 most popular YouTube videos of the week and vote for your favorites. Then, check last week's top videos, here.