YouTube in 2016 was all about viral challenges
Relive a year of bottle flips, carpool karaoke and a zombie apocalypse in under seven minutes.
YouTube's 2015 Rewind brings you cage dancing and gamers
YouTube's latest year-end retrospective acknowledges your game video habits.
Watch this: YouTube recaps some of 2014's best moments
With this year finally coming to a close, YouTube wants to make sure you haven't forgotten about t...