When it came time to track which clips earthlings enjoyed the most in 2012, the fine folks at YouTube used more than just the number of views any one video had over the past 12 months. They also looked at how many times it was shared and searched for, how many comments it received, and even how many times it was remixed or parodied. 

It's probably no surprise then that South Korean Rapper Psy's "Gangnam Style" tops their list. Youtube says "Gangnam Style" took only 6 months to become the most viewed video of all time and it's on track to hit one billion views soon.

A cover of Gotye's song "Somebody That I Used to Know" performed by five people playing one guitar comes in at number two on YouTube's list. When HLN wrote about the clip back in February it had some 60 million views. Now the video by group who call themselves Walk off the Earth has been played more than 140 million times!

KONY 2012 is in next at number three. Back in March, the video that sought to draw attention to a Ugandan warlord named Joseph Kony was inescapable. At its peak, YouTube says KONY 2012 pulled in 31 million views in a single day -- the most ever in a 24 hour period.

The earworm song of the summer: "Call Me Maybe" takes the fourth spot on YouTube's list, thanks in part to a myriad of parodies like this one, this one, this one, and this one. It even made waves offline when clever business cards featuring the song's catchy chorus surfaced.

See the full list -- including an Epic Rap Battle between presidential candidates, a hip hop rant about nosy girlfriends, an icy violin instrumental and one angry dad's response to his teen's disrespectful Facebook post at youtube.com/rewind.