The Fame/TFM Imperial Era really was something to behold. It ripped a hole in the fabric of space and time that I don't think any artist has done since. We can't talk about all kinds of smash eras that have followed (Teenage Dream, 21, 1989, Future Nostalgia, When We All Fall Asleep Where Do We Go), but I can't think of a single once that rebooted culture in quite the same way.