For it's Rewind 2012 video, YouTube went above and beyond, wrangling the guys from Epic Meal Time, the "girl" from Shit Girls Say and Mr. Gangnam Style himself, Psy, for a four-minute celebration of the year in viral videos. We didn't actually recognize all of the cameos in the clip. If you do, you should probably consider spending less time on YouTube in 2013.

[via Devour]