Defining album from each decade?

My mom recently passed away, and she had a giant wine box full of old vinyls. I dug through them and was putting good ones on the record player as I found them. As I was nearing the end of her collection, I found Michael Jackson "Thriller". I was inclined to play it, and as I'm currently listening to it, I decided it was the quintessential and encapsulating record of the 1980's.

Of course, music is one of the most subjective things out there, so I was wondering what the TD community thought was the most defining record of each decade.

Now, "best" and "defining" can be the same thing, but they might not be. That is for you to decide.

Here's the ones I'm nominating after minimal thought and multiple whiskeys:

60's- Jimi Hendrix "Electric Ladyland"

70's- having a tough time deciding...I was toying with the thought of the Saturday Night Fever soundtrack, but that seems a little too reductionary, even for this

80's- Michael Jackson "Thriller"

90's- Nirvana "Nevermind"....I'm just gonna say that my darkhorse for this decade would be some Garth Brooks album I don't know the name of, but the 90's will always spell grunge and teen angst to me.

2000's- This gets tough, as the scope of hindsight gets smaller. We had the nu-metal uprising, southern rap, and ever-present pop music. Maybe a Backstreet Boys, N'Sync, or the first Britney Spears album? Ugh.....I have to be forgetting some actual good music from this era, no?

Alright, my music people....whatchy'all think