I think that the cover for Marduk's "Panzer Division Marduk" is the best CD cover of all time. Why? Because while it is not the best-designed album cover of all time, it is the one with most raw emotion and expression in it. Sure, the sidenote made of a stream of bullets isn't really that impressive, even though the band logo does break up the monotony somewhat. But the dominating force of the picture is a big fucking tank, ready to fire, the barrel poised just above your head. Think about that. You know it's going to fire, and you know the noise is going to be infernal, and you just tense up, waiting for that moment when the cannon goes BOOOM and your eardrums shatter. The greatest cover, in my opinion.