Suggest one obsure album we all should hear

To many these won't be obscure but these came to mind. "Hats" by  The Blue Nile along with other offerings by them. "The Duhks" by The Ducks. Can't recommend these more highly.

Gonna emphatically second Al Stewart's "Past Present and Future" and Graham Parker's "Squeezing Out Sparks".

"About you" by Albin Lee Meldau.

Wishbone Ash Argus was my first obsession album too. 

Hard to narrow down without repeating. +1 on Neutral Milk Hotel - In the Aeroplane
Also
Amon Duul II - Dance of the Lemmings
The Freeborne - S/T - 
Circus 2000 - S/T
The Gerbils - 2nd
The Treniers - I only have the 78’s but I think they were brought together on an album in the 60’s -