Suggest one obsure album we all should hear

My 2 cents: 'That's the Way I Feel Now', a Thelonius Monk tribute double album from the 70's. Most of the artists covering Monk tunes, or should I say re-imagining them, are well known (eg Joe Jackson, Todd Rundgren, Peter Frampton, Dr John, NRBQ), but the album appears to be a rarity. There is a good CD too, also OOP, but it omits some of the wilder efforts of John Zorn and others.