YouTube's Top 10 Viral Videos of 2012: Rewind Style

YouTube announced their Top Ten Videos of 2012 and to make things more interesting, they created a mash-up of the winners that has already picked up nearly nine million views since it was posted 17 hours ago.

Titled 'Rewind YouTube Style 2012,' the 4:15 clip is a parody of 'Gangnam Style' and 'Call Me Maybe' with references to the other hot videos that were "culturally defining moments" this year.

Their list of 2012's most popular YouTube moments:  PSY-Gangnam was number one with over a billion views.  Landing in second place was cover song 'Walk off the Earth' picked up 140 million views, 31 million of them in a single day.

The rest of the Top 10: KONY 2012, Call Me Maybe - Bieber, Gomez, Pena, Epic Rap Battles - Obama vs. Romney, Dramatic Surprise, Why You Asking All Them Questions, Lindsay Stirling, Facebook Parenting and Stratos Highlights.

There is also a Behind the Scenes and Outtakes video.  It hasn't caught on with the same level of interest, yet, but can boast 231,600 views so far.

Check out the Year in Review videos here.