Suggest one obsure album we all should hear

Steve Tibbetts' autonomous album (BZZ-77) on Frammis Records distributed by Obscure Music Productions (that ought to qualify it!). "Jungle Rhythm" sounds interesting backwards...

Pink Floyd Meddle

Great thread. Many of my faves already mentioned and several that I'm going to seek out. Here are a couple that I love and are a bit obscure if not really rare.
Hall & Oates - War Babies (not like their early stuff or later pop junk, a real masterpiece!)
October Project - Falling Farther In
Graham Parker - Mona Lisa's Sister
Joe Jackson - Beat Crazy
Stabilizers - self titled
Johnny Winter - Johnny Winter And
The Kinks - Village Green Preservation Society (even if you think that you don't like them)

Cheap Trick- first two 
ZZ Top- Fandango
Rory Gallagher- Calling card
Pat Travers Band- Go for what you know
Frank Marino- What’s Next
Ted Nugent- Free for all (meatloaf on vocals)

Since @1111art seems to have an appreciation of 70's prog, I will suggest:
 Nektar- A Tab In The Ocean

Not sure if that is obscure or not these days.  If you reside in a state where pot is legal, it will help.