As far as least favourite album covers Pet Sounds is the worst. Amatuer hour; any album cover with the song titles listed looks like a compilation & the photo is cringeworthy. I also agree that the album is overrated. I also agree about Tusk, but I also don't like the Fleetwood Mac & Rumours covers.
Automatic For The People - REM
Some say this is their greatest album. It is nowhere near; Out Of Time is. Both albums have dreadful covers but Automatic is just horrendous.
Tattoo You - Rolling Stones
I love this album but I hate it when only one band member is shown on a cover (Keith is on the back; that doesn't excuse it). I don't like the Some Girls cover much either.
Making Movies - Dire Straits
I know it's supposed to be a frame from a reel of film & I should like it because it's mainly red. But it's my second favourite album & it should have a more interesting cover.
The End Of The Innocence & Strange Weather
The Innocence cover is awful, plus he has a cigarette dangling from his hand. The colours are drab (so is Building The Perfect Beast). Strange Weather just doesn't work & is a horrible disappointment for such a great album. Oh, and then there is Glenn Frey Live. It looks like it was designed in five minutes.
Invisible Touch - Genesis
Superb album. Very 80s cover. See also Bob Dylan's horrible Empire Burlesque.
Born To Run - Bruce Springsteen
If you can have an overrated album cover, this is it.
Rust Never Sleeps - Neil Young
Yeah. Grunge. I don't care. It's horrible.
I think I listed my favourites earlier in the thread.