2. Kanye West Interrupts Taylor Swift (2009)
We'll never know how much (or little) the trajectory of Taylor Swift's brilliant career shifted because of a hot-tempered Kanye West snatching her mic amid her Best Female Video acceptance speech. Nor can we see where Kanye West would be today if he hadn't yelled "Imma let you finish, but Beyoncé had one of the best videos of all-time!" before stalking off. And what of Queen Bey masking her disbelief in the audience? All already hyper-famous when it went down, the roles the trio have played before and since were all distilled in that moment. The five ensuing years yielded some of the finest creative output of their careers, but those awkward moments still loomed nearly as large via apologies, rebuffs, lines drawn and teams formed.