The Dark Side of the Moon LP is one of my most cherished albums of all time. I listened to it so much back then I almost wore the grooves out.
When the compact discs started to replace LPs and cassettes back in the early 1980s, DSOTM was the very first compact disc I ever bought and I held on to that until the "gold" edition came out a few years later. All told, I probably purchased DSOTM seven times in my lifetime. Once as an LP, twice as a cassette, once as an 8-track, twice as a compact disc and once as a DVD (in which DSOTM was done in concert).
On MP3, I collect as many Pink Floyd cover versions as I can find and have managed to put together a complete DSOTM album comprised entirely of cover versions by other artists.