This year’s annual YouTube Rewind video celebrates 2015, and it pays tribute to the first ten years of YouTube with a mash-up of all things pop culture brought to you by current and former YouTube stars (and some other celebrities). You might have to watch it ten times, once for every year you have known and loved YouTube, in order to get all the references. But definitely keep on the lookout for Charlie biting a finger and a very beautiful double rainbow.