What do you do when you're the star of the most-watched YouTube video, and it comes time for a mash-up of the biggest hits of 2012? If you're Psy, you take the lead in Rewind YouTube Style 2012, ...

The Obama vs Romney rap battle, Walk Off The Earth’s five-person-to-one-guitar “Somebody That I Used To Know” cover, Felix Baumgartner’s supersonic freefall, “Call Me Maybe” — they’re all represented, ...

Gangnam Style overtook Bieber’s Baby last month to become the most-watched video on the site and is now cruising towards a billion views. Other YouTube hits include Carly-Rae Jepsen’s Call Me Maybe, ...

What happens when you mix Harvard with one of the biggest bubblegum pop hits of 2012? A YouTube sensation. Almost as enjoyable is another video, "Behind the Scenes + Outtakes from Rewind YouTube Style ...

Google has released its YouTube Rewind retrospective for 2012, and, as you’d expect, PSY has taken the top spot with his über-viral Gangnam Style. By comparison, Rebecca Black’s “Friday” topped last ...

YouTube has celebrated the top trending videos of 2012 with a parody 'Rewind YouTube Style' video. The video is a mash-up of chart-topper 'Gangnam Style' and Carly Rae Jepsen's 'Call Me Maybe', ...

A mashup of Gangnam Style and Call Me Maybe, two of the year's most viral -- and parodied -- videos, is a big hit. Imagine that ! Rewind YouTube Style, basically a giant ad for the service, has owned ...

(CBS News) We saw Google do a look back at the year in search last week. Now, YouTube has released two videos that pay tribute to the year in viral videos. First up above, watch just about every ...