Suggest one obsure album we all should hear

What a great thread. Where else would we find such gems as "Eight Hitchhiker Inscriptions..." by Harry Partch?  (the king of non-12TET)

Maybe I missed it, but I didn’t see any Fred Frith yet.

My pick:
Espers "S/T"

Haven't seen any shoegaze yet. 

Boards of Canada  "The Campfire Headphase"  (vinyl preferable to CD)

My Bloody Valentine  "m b v"  (12" came with the CD)

Flying Saucer Attack "Distance" (2017 remastered vinyl is superb)

And something not related,

Beth Gibbons and Rustin Man  "out of season"   (definitely not Portishead)

@audioguy85-nice to see Lydia Lunch's name come up.  But to really appreciate her work, get the next release (if you don't already have it) "13.13".  Not for the casual listener by a long shot.  She collaborated with many artists over the years, some well known.  Many of those are well worth a listen.  Her compilation "Widowspeak" assembles many early recordings and long out of print singles.