The 10 Most Watched Ads on YouTube in December

Sandy Hook Promise's "Evan" PSA may have been our pick for the most engaging ad of December. But Shell's "Best Day of My Life" video with Jennifer Hudson, released way back in September, got a major second wind last month—pulling in three times as many views as "Evan" and taking the top spot on Adweek and Google's monthly YouTube Ads Leaderboard ranking the most watched ads on the platform.