Black Sabbath using tritone in their music, and Joni Mitchell making a wide range of listeners be familiar with the long misconceived interval.

Michael Jackson moon-walking

The birth of Ludwig van Beethoven

On a very personal level it was my mate and me being lent a tape(!) in 1995 of a history lecture that my A Level history teacher had recorded off the radio. Side A was a very interesting discourse on the Third Reich, side B was a collection of the best rock you ever heard. The Who, Cream, Jimi Hendrix, Eric Clapton, Rolling Stones all featured. Suddenly everything started making sense

Haha, I used to do that a lot.

Your teacher sent you a mixtape

Did he keep you back in 'detention'

blimey! you remember that?....

That would make me how old? Haha, good try

It was side A that we had to listen to as part of a history assignment. Side B was what remained of his favourite music that was previously on there. Believe me, he was a ladies man. I would have held no interest for him

Kylie Minogue performing "Can't Get Blue Monday Outta My Head" at the Brits.
Amazing moment and a highpoint of Minogue's career I reckon.