Another album considered to be one of the best of all time is Metallica's Master of Puppets. Not only is it the last album featuring bassist Cliff Burton (and his awesome bass solos in the track Orion), it's also the album that provided a springboard for the much loved ...And Justice For All album that followed it.
I love the cover for its symbolism. It features an overgrown cemetery full of crosses and the "master" holding onto the strings of the deceased, as well as Metallica's iconic logo. A lot of people took this cover to be a cheap shot at both God and the military, but it serves as a visualization of the entire album's themes of being controlled by outside forces (be it drugs, illness, other people, or the government). 

Although it isn't my favorite album by Crowded House, 1993's Together Alone does have a few solid tracks on it such as Locked Out and Private Universe. What really stands out for me is the Jesus-At-The-Wheel of a red car album cover.
The group's bassist, Nick Seymour, created all of the album covers for the band and this one is my favorite. It's just a happy, trippy cool cover that personified Crowded House's unique pop rock stylings.
The band is still active, having reunited (surviving members of the band's most successful lineup, drummer Paul Hester committed suicide in the mid-90's) and have remained together since 2006. 
What did you think of this list?