YouTube Rewind unveils 2015's most-watched online videos..

YouTube Rewind is a series of videos produced, created, and uploaded by the YouTube's official channel account on the website. The videos are an overview and recap of the year's most popular YouTube videos. Each year, the amount of YouTube celebrities featured in the video, as well as the presentation of the series have increased.

From a blockbuster Star Wars trailer to the latest dance craze sweeping North America, from belly-busting late-night skits to attention-grabbing scientific explanations, Canadians stayed glued to YouTube videos once again in 2015. 

The video-sharing site unveiled on Wednesday morning YouTube Rewind 2015, its annual tally of the online video content that captivated Canadians in the past year.

This is the 2015 YouTube REWID 

The list shows that when it comes to online videos, entertainment rules but a bit of education — wrapped in a cheeky and fun package — can captivate as well.

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