March 2014 had no shortage of great ads with big talent, with Keira Knightley vamping for Chanel and Terry Crews going wild for Old Spice. But there’s only room for one at the top of our YouTube Ads Leaderboard.

See who made the top 10 and watch the videos on Think with Google.

Ads are determined for the YouTube Ads Leaderboard by an algorithm that factors in paid views, organic views and audience retention (how much of a video people watched). For additional coverage of the YouTube Ads Leaderboard, go to Adweek.com.