Which Jazz Albums are similar to Kind of Blue

Agree with Audphile 1.
KOB is as unique as Abbey Road.

Check out First Light by Freddie Hubbard and Journey to the One by Pharoah Sanders

This album is totally unique in jazz for a couple of reasons - it was largely improvised almost on the spot - it does not contain a bunch of well worn jazz stardards that started as pop standards. Its very "modal" - long solos within a specific chord as opposed to frequent chord changes and modulations. And there is some controversy as to whether Bill Evans should get composing credit for much of the album as opposed to Miles. (So is it more like a Bill Evans album or a Miles album?)
So you won't really find other albums that "sound" or "feel" like this one IMO. Just try to go for the "best of the best". For Bill Evans, Village Vanguard and Waltz for Debbie. How about Ornette Coleman - Shape of Jazz to Come. Coltrane - Love Supreme. Wayne Shorter - Speak No Evil - an all time classic of the genre - has a similar darkness/minor feel to Kind of Blue. Monk and Coltrane -they made 2-3 classics together. Check out Terence Blanchard - or Christian Scott - innovative current trumpeters. Don't forget the free samples on itunes

I have sampled the latest suggestions, and here is my rating (and already on my buying list):

1. Johnny Hodges: Johnny Hodges,Billy Strayhorn and the Orchestra
2. Mal Waldron/Eric Dolphy: The Quest
3. Miles Davis: "L'Ascenseur pour L'Echafaud"
4. Sonny Rollins: Saxophone Colossus

Thanks guys for helping me diversify my collection:

The same year Davis recorded Kind of Blue he also recorded "Sketches of Spain", and 18 years later, a group of top musicians, some who have been mentioned on this interesting thread, recorded an album with the same feel (and same composition at its root) -

Concierto - Jim Hall

Hall is one of the great jazz guitarists and he's joined by Chet Baker on trumpet, Paul Desmond on alto sax and Ron Carter on bass.

And if you like that, or even if you don't, you should also listen to Hall playing with Bill Evans in Undercurrent.