How did I miss this thread? Oh, and I agree (and I love them so much).Alice in Chains - Would, Them Bones, Down in a Hole, Man in Box.
AIC pretty much sums up the sound of the 90s for me. Whether you loved or hated them - if you were even remotely interested in music you heard them.
Also some others:
NIN -- Closer (really all of The Downward Spiral).
Pearl Jam -- Jeremy
Rage Against the Machine: Killing in the Name, Bulls on Parade
Metallica -- Enter Sandman
Soundgarden -- Black Hole Sun, Spoonman