Giant Squid's album The Ichthyologist is an album that follows the plot of a comic book the lead singer has written (though I don't believe it's been drawn yet? I know it's not been published). I've definitely touted the virtues of this band somewhere here.
Did we get this far without mention of The Pretty Thing's S.F. Sorrow? (Maybe I missed it.)
It really is the first rock opera/concept album/whatchacallit. Recorded in '67, released in '68, it predates the Who's Tommy. It's also quite good - but Parachute, their next LP, is better. (Parachute is also a suite of related songs that might qualify as a concept album.)
@ adamncopeland - I think we can probably include most of Kool Keith's recordings, because every album seems to be built around whatever character he's adopting that week. Oh and then, there's Sex Style, a concept album about f*cking. And now that I'm actually thinking about hip-hop, and f*cking - Dan the Automator's Lovage: Music to Make Love to your Old Lady By, which features a star turn by Mike Patton, crooning very sensually.
MF Doom has a bunch of great concept albums, particularly the Viktor Vaughn - Vaudeville Villain album, where he portrays a kinda loser gangsta, which doesn't sound like much, but the character is so well defined and presented, and it uses some of my favourite beats and producers of the time. And his Mm Food album, which is a hip-hop concept album about food. Really, every song is about food and features a variety of food based puns. Oh wait, plus the Dangerdoom album which is a concept album about Adult Swim.
FSOL's Dead Cities, and Genesis' ...Lamb Lies Down... have already been mentioned, so I'll just smile and nod along with those. The Who's Quadrophenia is sort of a pat answer (well, Tommy's the pat answer, I guess) but I think it's aces, along with Who's Next, which is a concept album with chapters ripped out. Also, The Moody Blues' Days of Future Passed.
The Happy Family / Momus - The Man On Your Street (fascism) Willie Nelson - The Red-Headed Stranger (revenge and remorse) THE RESIDENTS!!!!! - The Mole Trilogy, Demons Dance Alone, Voices of Midnight (after ETA Hoffman's "The Sandman"), oh hell, pretty much every one of their albums has had a unifying concept The Hawklords - The Coming of the Hawklords (Hawkwind side project; I've never heard it; it's supposed to be abysmal) Lou Reed - Metal Machine Music (well, it is a concept. I actually listened to it all the way through, but not on speed, so alas it did nothing for me) The Tubes - Remote Control
The Murder of Rosa-Luxemburg - Everyone's In Love And Flowers Pick Themselves. Very strange concept, Victor is an old man and has grown disafected with religion, as a result he decides to build his own house and cut himself off from the world to become god. Whilst living alone with his cat and dog he goes batshit crazy, and dreams that said animals are fighting over his soul. He then dies, and in doing so wonders what his life would have been like if he'd lived as part of a wider society. Or something. Though good luck working that out from the music.
the entire DESTINATION:TIME trilogy by graf orlock (today, tomorrow and yesterday) are a concept...but i couldnt fucking tell you what that concept is.
the only one that seems to actually have anything that can be gleaned story-wise is the newest one, but even thats kinda iffy. thats what you get from movie based grindcore?
also HEWHOCORRUPTS-ten steps to success is exactly what it sounds like: a loose plan for "making it" in the corporate world from this fake-corporation masquerading as a brutal hardcore band
Real Tuesday Weld - I, Lucifer. All tracks influenced by the novel of the same name. It will be interesting to see if it's chosen as soundtrack for the upcoming movie.
The soundtrack to Dead Man. All orchestrated and performed by Neil Young. It truly is haunting and unique.
Laurie Anderson - Big Science. Another album that is elicits the weirdest emotional responses. I wonder if she knows how black her humor actually is? Probot - self titled. Wonderful idea. Write all the music for your favorite singers/lyricists and have them do their thing.
All of Shatner's and Nimoy's records. Even if you didn't like any of it, the balls to actually do such a thing, to put your reputation on the line? Wow...
God help me, but I actually do enjoy it: Styx, KILROY WAS HERE
I don't *think* Peter Gabriel's US qualifies as a unified concept album, although the concert video for that is absolutely mindblowing for the concepts on display.
Blue Man Group, THE COMPLEX
Unfortunately, I can't think of any others that I've listened to and enjoyed. Although I confess, I never thought of looking at NIN: The Downward Spiral as a concept album, even though it's an alltime favorite. Just never occurred to me to look at it like that.
Most of my picks have been mentioned it looks like, but some I really like:
Dead Letters Spell out Dead Words - Lost in Reflections Sergei Rachmaninoff - Isle of the Dead (that counts right? it certainly has a very specific concept behind it) Play - A3LSCH8500 Johann Johannsson - IBM 1401, A User's Manual
Also, I'd RE-mention Cex - Maryland Mansions NIN - TDS and The Fragile
Holy shit, Adam fucking Sward. You'd better be posting some of your art here, you talented bastard.
Anyhow.
Probably my favorite concept album ever, is The World/Inferno Friendship Society's 'Addicted To Bad Ideas: Peter Lorre's Twentieth Century", about the life and times of Peter Lorre.
Live performance of the opening track, "Peter Lorre's Overture"
They occasionally perform the album in its entirety, which I would love to see someday. They are one of the most captivating, energetic live bands I have ever seen. I'm attending their annual Halloween show in New York City this year, and it's quite possibly the most intensely I have ever anticipated a show.
saul williams - the inevitable rise and liberation of niggy tardust daft punk - discovery ( interstella 5555 project ) kraftwerk - radio-activity, computer world tool - 10,000 days, lateralus the who - tommy ^ me likey these.