Another year, another slew of YouTube videos! 2012 proved to be the year of “Gangnam Style” and “Call Me Maybe,” so the folks over at YouTube put together this fun video combining some of the hottest YouTube stars AND the most viral vids of the year. Starting off with Walk Off the Earth doing an acoustic version of “Gangnam Style,” Psy then busts in and shows then how it’s done. After that, they transition into the parody of Barack Obama doing the infamous dance. Then we get to see some of the Annoying Orange, as well as the guys from Smosh games taking on the folks at NASA during the Mars Rover landing. After “Gangnam Style,” some YouTubers like Jenna Marbles and iJustine do the popular “Call Me Maybe” Harvard Basbeball team dance. For the grand finale, they all get together and dance to Carly Rae Jepsen’s infectious tune. Watch it for yourself above!