YouTube invited its biggest stars, and the folks who made the year's biggest videos, to join in their annual year-end "rewind" video. Get ready for a collage of the the people, images, memes, and music of 2013. You'll see Neatorama favorites Freddie Wong, Rhett & Link, and MysteryGuitarMan, along with Jimmy Fallon, Macklemore, Cookie Monster, and other celebrities. There's a list of them at the YouTube page. The soundtrack is a half-dozen songs that are memes of 2013 themselves, mixed by DJ Earworm. Trying to name all the references in this mashup would be an interesting exercise, but first -just watch and enjoy it for what it is: a time capsule of YouTube in 2013.