I don't recall having seen this pop up in this community. Give a rundown of your favorite albums. Top slot, top 3, top 5, 10... whatever's easiest to you since I know it can be tough to narrow things down to a specific degree.
It'll be interesting to see where everyone is coming from in this regard. Could create for a good opportunity to discuss albums, find people with similar tastes, argue that a different album from someone's catalog is better, etc.
I'll throw mine down in a separate comment once I get it figured out.
Alright, Top 13 for me, because 13 and this is what I could figure well enough and be satisfied with right now. Ordering subject to roughly change somewhere around fifth slot depending on what mood I'm in on any given day, but these are solid mainstays in my rotation (most of them for decades at this point). Doesn't reflect how broad my interests go, but you can see that I gravitate a lot toward black metal, and I favor stuff that isn't afraid to be its own thing. Weird is good. Non-metal albums removed though there are a couple in my top 10 if I weren't being genre specific.
Dødheimsgard - A Umbra Omega
Ved Buens Ende - Written in Waters
Murmuüre - Murmuüre
Emptiness - Not For Music
The Skaden - You Will Hope I Had Died
Solefald - The Linear Scaffold
Samael - Eternal
At the Gates - The Red in the Sky is Ours
Ulver - Bergtatt - Et Eeventyr i 5 Capitler
Cryptopsy - None So Vile
Summoning - Old Mornings Dawn
Rotting Christ - Khronos
Akercocke - Words That Go Unspoken, Deeds That Go Undone