To the guys who keep posting Rush albums, let me only add this. Everyone who likes rock music should already have every remastered Rush CD in their collection and they all sound especially great on headphones (especially "Natural Science."
But since I have confidence that you fine folks already own those CDs, we need not discuss that any further.
Here are my other favorite rock albums:
Iron Maiden: Live After Death
Simultaneously the best metal album and the best live album ever produced. Iron Maiden is one of those bands that manages to sound way better live than in the studio and this was the album taken from the tour of their career. If you've ever even thought about giving metal a chance, this is the place to start.
Beach Boys: Pet Sounds
Arguably the most influencial rock album of our time. The remastered version came out last year and has well done stereo remixes by Brian Wilson.
Deep Purple: In Rock
I think there's a remastered version of this one available in the UK but I haven't found it locally. Deep Purple can prety easily be blamed for progressive rock and heavy metal at the same time. Like Iron Maiden, they're one of the tightest rock bands to have ever existed and this was them in their prime. If you've any question, "Child In Time" alone makes this album worth owning.
Black Sabbath: Volume 4
Not quite as popular as the Paranoid album, but this was cut when Black Sabbath had achieved both musical professionalism and enough popularity to not really have to record radio hits. There's some real experimental stuff on this one and the whole album flows together. The "hits" "Supernaught" and "Snowblind" are found on this one, too.
Queensryche: Operation Mindcrime
This is my favorite concept album, beating out even The Who and Pink Floyd. You may have heard a song or two of this on the radio, but this is really a "sit down and listen to the whole album" kind of thing, which is really what I was going for on this list.
Dream Theater: Scenes From a Memory
I can't begin to describe this album. Musically, it's just untouchable. Things you didn't think were possible on guitars are done casually on this album with a band chemistry that's unheard of. It manages to be a jam session at the same time as being one of the best orchestrated works on rock music. And yeah, it's another concept album--but you may need someone to explain it to you.
The Cure: Disintegration
They were supposed to break up after this album or something and that's where the name comes from. I think they were supposed to break up every album after this one too. I love every track on this one and it never seems to get old no matter how you listen to it. I feel bad recommending some of these, like Rush, surely this is already in your collection.
Fates Warning: Awaken The Guardian
A bit more obscure than my other recommendations. Remember when all of hard rock and metal was leaning toward that high pitched sound with pretty worthless lyrics and fast guitars? This is the exact point where that begins to change--this is probably the first progressive metal album. They still have the old singer and do a lot of operatic vocals, but with intelligent lyrics and progressive music. It's almost a perfect blend of where that kind of music came from and where it ended up going. Fates Warning eventually evolves into a more Rush-like sound by recruiting Rush producer Terry Brown, but this is before all that and thus, it is your starting point.
Judas Priest: Defenders of the Faith
Also recently remastered, this is the band in their prime. Many would argue this album versus its two sister albums, British Steel and Screaming for Vengence, but Defenders of the Faith is the true summary of who Judas Priest is. "Freewheel Burning" is simply one of the best rock songs of all time and "The Sentinel" and "Love Bites" prove that 'Priest has some range. If you're only going to get one, this is the one, but feel free to grab the others too, and then go back for Stained Class just to have the first true heavy metal song, "Beyond the Realms of Death."
Ozzy Osbourne: Diary of a Madman
Someone else mentioned Ozzy but if you're going to get Ozzy, it has to be either this one or Blizzard of Ozz. The band line up is Ozzy, Rudy Sarzo on bass, Randy Rhodes on guitar and Tommy Aldridge on drums. It only lasted two albums but that's got to be one of the classiest lineups of any rock band's history. Diary of a Madman is a little more musical than its hit laden companion album, Blizzard, with songs like "Little Dolls" putting you in a different world on headphones.
So that's it--in my humble opinion, the 10 best rock albums of all time. I'm sure that's more longwinded than most of you cared for, but for me this is where rock music is at and I can't imagine a CD collection without them.
Kelly