Share albums where EVERY SINGLE song is good

My two cents:

I would have included Cafe Blue as well except there is one cut on it that I always skip over.

Many people suggested Joni Mitchell's Blue and that is a good choice although I personally prefer Hejira.

Kind Of Blue deservedly made many lists including my own although I get the feeling the OP was thinking about rock and pop.

You can certainly tell a lot about a poster by the music he/she listens to.

The Nightfly

Frampton Comes Alive

Every Steely Dan album

New adds:

Elvis Costello "My Aim Is True", "Get Happy", "This Years Model", "Armed Forces"

Nitty Gritty Dirt Band "Will The Circle Be Unbroken"

Jefferson Airplane "30 Seconds Over Winterland"

Big Brother & The Holding Co. "Cheap Thrills"

Bonnie Raitt "Nick of Time"

Paul McCartney "Ram"

David Bowie "ChangesOne"

Creedence Clearwater Revival "Greatest Hits"

Santana self-titled first album and "Abraxas"

The Who "Quadrophenia", "Live at Leeds"

Little Feat "Sailn Shoes", "Dixie Chicken"

Nirvana "Nevermind"

Simon & Garfunkel "Bridge Over Troubled Water"

Black Sabbath "Paranoid"

U2 "Achtung Baby"

The Eagles "Hotel California"

And:
CSNY "Four Way Street"

Every Rory Gallager

Every Doors

Every AC /DC

Every Stevie Ray Vaughn