YouTube has had a big year, even by its own standards.
In 2014 the Google-owned streaming video service got a new boss, a new revenue stream and a new rival. It also rolled out a massive marketing campaign, the first of what are expected to be several ad-free subscription services and a new production studio in New York. And its stars landed on "Dancing With the Stars," The New York Times bestseller list and one saw his book turn into a film called "The Fault in Our Stars."
To celebrate its big year, the nine-year-old company and creative studio Portal A produced a year-in-review video starring some of its biggest celebrities, like Grace Helbig taking a selfie, the Smosh brothers and Fine brothers taking the Ice Bucket Challenge, Bethany Mota taking on "Let It Go" from "Frozen" and Freddie W taking over Conan O'Brien's late-night talk show.
Rogue ad-agency creatives Rhett & Link appear in the video. As does a face who should be familiar to most of adland: the Devil Baby from viral video "Devil Baby Attack" used to promote the movie "Devil's Due."
More traditional celebrities including Jimmy Kimmel, John Oliver and Stephen Colbert also join the mix and are backed by some of the biggest music videos of the year like Pharrell William's "Happy," Iggy Azalea's "Fancy," Jessie J's "Bang Bang" and Meghan Trainor's "All About That Bass." Even Big Bird makes a cameo.
But it's an even bigger star who opens the video: PewDiePie, whose main YouTube channel counts 32.7 million subscribers and makes him YouTube's biggest star of all.