Fact: YouTube's most viewed video in 2016 was Fifth Harmony's Work from Home ft. Ty Dolla $ign. The video, which premiered on the site in February (16), has already garnered over a billion views and is still gaining. Calvin Harris' summer anthem This Is What You Came For ft. Rihanna landed in second place, also surpassing a billion views. Other popular videos include Hasta el Amanecer by Nicky Jam and Work by Rihanna ft. Drake.