In reply to pasbury:
a track, rather than an album.
I'm 58 now, and when this track - The Damned 'A New Rose' came out and I was 16 and just about to go up to sixth form. I kept all my Zeppelin, Jeff Beck, Pink Floyd and Prog albums (still listen to them) but this single took me off via the Stranglers and Dead Kennedys eventually to Nirvana and SoundGarden (each of whom have candidates for this thread 'Nevermind' and 'Superunknown ' respectively). I think that Damned single is responsible for my obsession with all things Slayer, Metallica, Pantera et al, but it's not immediately obvious.
I played the youtube video link and it made me smile. 76/77 at Barbarellas and Bogarts clubs in Birmingham watching The Damned, Stranglers, Sex Pistols....even the Scorpions at Bogarts, then regular Sabbath gigs at the Town Hall and the Odeon.
Great days
Paul
PS if you're going to forget a Floyd album, make it Wish you Were Here, it's like way better than Dark Side of the Moon