Google has announced the most popular YouTube videos of 2012, and it's no surprise to see K-pop phenom Psy top the list with all-time number 1 "Gangnam Style." What is a surprise, however, is to see Psy take the starring role in a video called "Rewind YouTube Style" that mashes up many of the site's other biggest hits with his own.

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, and they all come together to cram as much 2012 pop culture into a single four-minute video as we'd imagine possible.