Yes, popular singers were the most influential people of the last 3 decades. That makes perfect sense. I could understand MJ, but John Lennon hasn't been influential for the last 30 years. I'm assuming that's a picture of Freddie Mercury, and while he has had some influence, it's not that much compared to a lot of other people.
I'd put another vote towards Michael Jordan. The dude pretty much made basketball what it is today. Plus, Space Jam was an awesome movie.







