To celebrate 2013, YouTube invited some of its most popular contributors to star in a mashup of popular moments this year. Can you spot all the references?
yesterday in Music
The rock legends will publish a number of unreleased tracks, including an alternate version of "Whole Lotta Love."
After he leaves the "NBC Nightly News," Brian Williams might have a future in music.
Tuesday in Viral Videos
Who needs a school bus when your dad is an animator?