Am I right that there have only been two of them, so far?
The cover of the current one shows ... brick walls and has the title
Turpentine PolyannaTopsyturvy Polly Harvey Terpsichore Polyhymnia.Try saying that without your dentures to the chap in Virgin Megastores.

The other album was a pink blighter with a tickling stick blu-tacked to the case. Alright, maybe I made up the last bit.
So whose the brains behind the album covers and how are you going to top Terpsy Brick Walls?
Sir Robert Peel