It really hurts to leave out so many albums but to go on any further would make it even more random(maybe if you move the deadline again?):
1. Acid Mothers Temple - Absolutely Freak Out
2. Sin Dios - Guerra a la Guerra
3. Boredoms - Vision Creation Newsun
4. Today Is The Day - Sadness Will Prevail
5. Salem - King Night
6. Hatfield & the North - s/t
7. Nas - Illmatic
8. f**k Buttons - Street Horrrsing
9. Jethro Tull - Thick as a Brick
10. Clivage - Mixtus Orbis
11. La Grande Vadrouille - s/t
12. Acid Mothers Temple - Pink Lady Lemonade You're From Outer Space
13. National Health - Of Queues and Cures
14. Tony Conrad with Faust - Outside the Dream Syndicate
15. Motorpsycho - The Death Defying Unicorn
16. Henry Cow - In Praise of Learning
17. Edge of Sanity - Crimson
18. Car Bomb - w^w^^w^w
19. Anamanaguchi - Endless Fantasy
20. Robert Wyatt - Rock Bottom
21. King Crimson - Larks' Tongues in Aspic
22. Car Seat Headrest - Twin Fantasy
23. Crass - Yes Sir, I Will
24. La Monte Young - The Well-Tuned Piano
25. Iscariote - Necropole Trauma
26. Sissy Spacek - s/t
27. C L E A N E R S - Real Raga sh*t Vol. 1
28. Genus Inkasso - The Despised Pastora
29. The Police - Outlandos D'Amour
30. Incapacitants - Operorue
31. Gorguts - Obscura
32. Ghédalia Tazartès - Diasporas
33. Death Grips - The Money Store
34. Sigh - Imaginary Sonicscape
35. John Wiese - Soft Punk
36. Cockney Rebel - The Human Menagerie
37. Björk - Vespertine
38. It's Over, I Tried... - GASLiGHT!
39. It's Over, I Tried... - Misandry
40. The Mars Volta - De-Loused in the Comatorium
41. Acid Mothers Temple - Acid Motherly Love
42. Magma - K.A.
43. The Rita - Thousands of Dead Gods
44. Captain Beefheart - Shiny Beast (Bat Chain Puller)
45. Glenn Branca - The Ascension
46. Fantômas - Suspended Animation
47. Gopal Shankar Mishra - Out of Stillness
48. Laszlo Hortobagyi - Terra Dei
49. Slint - Spiderland
50. Chuck Person - Chuck Person's Eccojams Vol. 1