NIN - The Downward Spiral (1994, Deluxe Edition)
This is a band I've followed from the beginning, although I don't care for their post-The Fragile albums.
Pink Floyd - Dark Side of the Moon
Hybrid SACD. Digital Remaster, 2003.
I got into them with Broken, then got TDS and Fragile. STILL haven't gotten PHM, but do have Year Zero, which is...ok.
Not a huge fan, but they hit the spot every so often.