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? A "leaked" iPhone 5 commercial highlights the gadget's new features, an X Factor U.K. contestant loses her cool onstage, Beyonce performs for World Humanitarian Day -- and much, much more.

Watch the 9 most popular YouTube videos of the week and vote for your favorites. Then, check out previous picks, here. For more top videos, browse our slideshow of the most-watched YouTube videos from 2011.

Loading Slideshow...
  • #9 - Muse - Madness (Lyric Video)

  • #8 - I Was Here (United Nations World Humanitarian Day Performance)

  • #7 - Funny Mario Balotelli vs. City Photographer

  • #6 - PSY - Gangnam Style (강남스타일) M/V Byuntae Style! (Parody)

  • #5 - Blue Whale Impersonates Large Shark, Sighting Reminiscent Of 'Jaws'

  • #4 - Kara (카라) - Pandora (판도라) Music Video

  • #3 - Zoe Alexander's Audition - The X Factor UK 2012

  • #2 - Leaked Official Apple iPhone 5 Promo Video - Keynote 2012

  • #1 - What If Everyone Jumped At Once?