Okay, I'm not going to bother putting this in order. That's much too difficult for me - I might like one album for a totally different reason than I like another, so how could I possibly measure that?
Anyway, here are 100 albums I consider worth hearing before you die. I'm going to limit it to one album per artist, and I'll try to include a brief description with as many as I can.
Alphabetical order:
1.
Adolescents -
Adolescents (1981)

One of the greatest and most solid hardcore punk albums I've ever heard. Definitely opened my eyes when I first heard it.
2.
Amon Düül II -
Yeti (1970)

This is certainly one of the best of krautrock and deserves much more credit than it seems to get.
3.
Art Ensemble of Chicago -
Les stances à Sophie (1970)

Don't really need to explain the appeal of this album. Just listen to the first few seconds of 'Thème de yoyo' and it'll certainly have your attention.
4.
Albert Ayler -
Spiritual Unity (1964)

Extraordinary free-jazz. Worth hearing for its musical exploration alone.