YouTube Rewind showcases the trending videos, memes and fads that featured on the worldwide platform over the course of an entire year.
The Shape of 2017, the fourth instalment in the series, was released on Wednesday.
Familiar faces such Stephen Colbert and of course Ed Sheeran feature, along with a few personalities only true YouTube aficionados will recognise.
But how much do you remember? Find out with our super short quiz.
Can't see the quiz? Click here.
Watch the rewind, in all it's glory, here:
Meet the creators featured in this year's video, here.