Albums For The Wall

Metallica - Master of Puppets?
Metallica - Ride the lightning?

either one, but if you're going with alot of the others posted here, I'd go with Ride the Lightning.

How bout the album cover of the album with 'Blitzkreig Pop' on it? Wasn't it a black and white featuring the band leaning against a brick wall?

And Im pretty sure that even if you dont like it, you have to put up the Pink Floyd, just because it probably is the most recognizable album cover ever.