The 10 Most Important Videos in YouTube History
"Me at the zoo" is super important only because it is the FIRST YouTube Video ever uploaded.
There are different opinions about the most important 10 videos ever. (Of course.) Here are a couple articles that give their opinions.
From Business Insider: http://www.businessinsider.com/most-important-youtube-videos-2015-2
From Observer: http://observer.com/2015/02/the-10-most-important-videos-in-youtube-history/