Aight, I think I'm done. 10 days left to submit!
I kept my list going without any numbering at all, so I wouldn't be biased to include / not include albums if they were near the 100 line. This is how it shook out; for my own indulgence, I've spoilered everything beyond 100 below the final list.
1. U2 - Achtung Baby
2. Radiohead - OK Computer
3. Smashing Pumpkins - Siamese Dream
4. Cocteau Twins - Heaven or Las Vegas
5. Nirvana - Nevermind
6. Radiohead - The Bends
7. Alanis Morissette - Jagged Little Pill
8. Spiritualized - Ladies and Gentlemen We Are Floating In Space
9. Liz Phair - Exile in Guyville
10. Snoop Doggy Dogg - Doggystyle
11. U2 - Zooropa
12. The Tragically Hip - Fully Completely
13. R.E.M - Automatic For the People
14. Pearl Jam - Vs.
15. Garbage - Garbage
16. My Bloody Valentine - Loveless
17. Superchunk - Foolish
18. Primal Scream - Screamadelica
19. Massive Attack - Mezzanine
20. Lucinda Williams - Car Wheels On A Gravel Road
21. Throwing Muses - The Real Ramona
22. Nine Inch Nails - The Downward Spiral
23. The Notorious BIG - Ready to Die
24. Beck - Midnite Vultures
25. The Juliana Hatfield Three - Become What You Are
26. R.E.M. - New Adventures In Hi-Fi
27. The Mountain Goats - Full Force Galesburg
28. Weezer - Weezer (blue)
29. Fiona Apple - When the Pawn...
30. Pearl Jam - Ten
31. Green Day - Dookie
32. David Gray - White Ladder
33. Phish - Billy Breathes
34. Local H - Pack Up the Cats
35. Nirvana - In Utero
36. Weezer - Pinkerton
37. Dinosaur Jr. - Where You Been
38. Del the Funky Homosapien - I Wish My Brother George Was Here
39. Moby - Play
40. Beastie Boys - Ill Communication
41. Dave Matthews Band - Before These Crowded Streets
42. Smashing Pumpkins - Mellon Collie and the Infinite Sadness
43. The Chemical Brothers - Exit Planet Dust
44. Tom Petty - Wildflowers
45. Third Eye Blind - Third Eye Blind
46. blink-182 - Enema of the State
47. Massive Attack - Blue Lines
48. Red Hot Chili Peppers - Blood Sugar Sex Magik
49. Goo Goo Dolls - Dizzy Up the Girl
50. Jesus Jones - Doubt
51. Bikini Kill - Pussy Whipped
52. Aphex Twin - ...I Care Because You Do
53. Dr. Dre - The Chronic
54. Bjork - Debut
55. Alice in Chains - Jar of Flies
56. Superdrag - Head Trip In Every Key
57. DJ Shadow - Endtroducing...
58. Counting Crows - August and Everything After
59. Oasis - What's the Story Morning Glory
60. Jimmy Eat World - Clarity
61. Digable Planets - Reachin' (A New Refutation of Time and Space)
62. Global Communication - 76:14
63. Portishead - Dummy
64. Butthole Surfers - Independent Worm Saloon
65. U2 - Pop
66. Local H - As Good As Dead
67. The Black Crowes - Shake Your Money Maker
68. The Tragically Hip - Day For Night
69. Eminem - The Slim Shady LP
70. A Tribe Called Quest - The Low End Theory
71. Sonic Youth - Washing Machine
72. Nick Cave & the Bad Seeds - Henry's Dream
73. Alice in Chains - Dirt
74. Hole - Live Through This
75. Sleater-Kinney - Sleater-Kinney
76. KMD - Mr. Hood
77. Los Lobos - Kiko
78. Lou Reed & John Cale - Songs For Drella
79. Stereolab - Dots and Loops
80. Aphex Twin - Richard D. James Album
81. Rage Against the Machine - The Battle of Los Angeles
82. The Afghan Whigs - 1965
83. Daft Punk - Homework
84. Wilco - Summerteeth
85. Matchbox Twenty - Yourself or Someone Like You
86. The Cure - Wish
87. Nightmares on Wax - Smoker's Delight
88. Primus - Sailing the Seas of Cheese
89. Grant Lee Buffalo - Copperopolis
90. Sonic Youth - Dirty
91. Fugazi - In On the Kill Taker
92. Pulp - This Is Hardcore
93. 2Pac - Me Against the World
94. Smashing Pumpkins - Gish
95. Yo La Tengo - Electr-o-pura
96. A Tribe Called Quest - People's Instinctive Travels and the Paths of Rhythm
97. The Afghan Whigs - Gentlemen
98. The Black Crowes - Amorica.
99. Foo Fighters - There Is Nothing Left to Lose
100. Fatboy Slim - You've Come a Long Way, Baby
101. Material Issue - International Pop Overthrow
102. Pulp - Different Class
103. Outkast - Aquemini
104. Drop Nineteens - Delaware
105. Stone Temple Pilots - Core
106. Goo Goo Dolls - Superstar Car Wash
107. Depeche Mode - Violator
108. Savage Garden - Savage Garden
109. Passengers - Original Soundtracks I
110. Blur - Parklife
111. The Tragically Hip - Road Apples
112. Sheryl Crow - Tuesday Night Music Club
113. Smash Mouth - Astro Lounge
114. Blind Melon - Soup
115. The Jayhawks - Tomorrow the Green Grass
116. Dixie Chicks - Wide Open Spaces
117. Nas - Illmatic
118. Foo Fighters - The Colour and the Shape
119. Smashing Pumpkins - Adore
120. Green Day - Insomniac
121. Pavement - Crooked Rain, Crooked Rain
122. Primus - Pork Soda
123. Mos Def & Talib Kweli - Black Star
124. Spoon - A Series of Sneaks
125. Sugar - File Under: Easy Listening
126. The Cardigans - First Band on the Moon
127. Blur - Blur
128. Hootie & the Blowfish - Cracked Rear View
129. Eels - Beautiful Freak
130. Company Flow - Funcrusher Plus
131. Janet Jackson - The Velvet Rope
132. Skunk Anansie - Stoosh
133. Beastie Boys - Hello Nasty
134. Public Enemy - Fear of a Black Planet
135. The Flaming Lips - The Soft Bulletin
136. INXS - X
137. Silver Jews - American Water
138. Morrissey - Vauxhall & I
139. Soundgarden - Badmotorfinger
140. Pixies - Bossanova