Here's the top 100 posted so far. Hope you don't mind me posting a recap Screwtape:
1. Genesis - Lamb Lies Down On Broadway
2. Kate Bush - The Dreaming
3. Utopia - Ra
4. The Cure - Disintegration
5. Pink Floyd - Animals
6. Radiohead - Ok Computer
7. Radiohead - The Bends
8. Radiohead - Kid A
9. Radiohead - Amnesiac
10. Radiohead - Hail To The Thief
11. Bruce Springsteen - Born to Run
12. The Beatles - Abbey Road
13. Brian Eno - Another Green World
14. Talking Heads - Remain in Light
15. David Bowie - Low
16. David Bowie - Ziggy Stardust
17. The Smiths - The Queen Is Dead
18. U2 - Achtung Baby
19. U2 - The Joshua Tree
20. Oasis - Definitely Maybe
21. Pink Floyd - Dark Side of the Moon
22. Pink Floyd - Wish You Were Here
23. Alanis Morrisette - Alanis Morrisette
24. Van Halen- Van Halen
25. The Beatles - Sgt Pepper
26. Bob Dylan - Blood on the Tracks
27. Arcade Fire - Funeral
28. Bruce Springsteen - The Wild, Innocent, E-Street Shuffle
29. Neil Young - Everybody Knows this is Nowhere
30. Velvet Underground - Velvet Underground & Nico
31. Madonna - Ray of Light
32. Fleetwood Mac - Rumours
33. Oasis - (What's The Story) Morning Glory
34. The Who - Live At Leeds
35. Patti Smith - Horses
36. Bob Dylan - Highway 61 Revisited
37. Lucinda Williams - Car Wheels On a Gravel Road
38. Miles Davis - Kind of Blue
39. The Clash - London Calling
40. Rolling Stones - Exile On Main Street
41. Travis - The Man Who
42. Lindsey Buckingham - Under the skin
43. Yann Tiersen - C'était ici
44. Ludovico Einaudi - La Scala
45. Ryan Adams - Love is Hell, Pt 1
46. Nirvana - Nevermind
47. Led Zeppelin - Led Zeppelin
48. Ramones - Ramones
49. The Doors - The Doors
50. Rolling Stones - Let It Bleed
51. The Who - Who's Next
52. Elvis Costello - This Years Model
53. Midnight Oil - Blue Sky Mining
54. Red Hot Chili Peppers - Stadium Arcadium
55. Black Crowes - Southern Harmony & Musical Companion
56. Wilco - Yankee Hotel Foxtrot
57. Sigur Rós - Ágætis Byrjun
58. Beck - Sea Change
59. Okkervil River - Black Sheep Boy
60. Iron & Wine - Our Endless Numbered Days
61. Broken Social Scene - You Forgot It In People
62. Interpol - Turn On The Bright Lights
63. Interpol - Antics
64. Tori Amos - Little Earthquakes
65. Stars - Heart
66. Muse- Absolution
67. Franz Ferdinand- Franz Ferdinand
68. Pink Floyd- The Wall
69. The Police- Synchronicity
70. The Police Zenyatta Mondatta
71. Swervedriver - Mezcal Head
72. Suede - Dog Man Star
73. The Smashing Pumpkins - Siamese Dream
74. Ride - Nowhere
75. Jellyfish - Spilt Milk
76. Carole King - Tapestry
77. George Michael - Listen Without Prejudice Vol. 1
78. INXS - Kick
79. Guns N Roses - Appetite for Destruction
80. Madonna - American Life
81. Red Hot Chili Peppers-Californication
82. Coldplay-A Rush Of Blood To The Head
83. The Killers-Hot Fuss
84. Green Day-Dookie
85. Weezer- The Blue Album
86. The Beatles - The White Album
87. Jeff Buckley - Grace
88. Marvin Gaye - What's Going On
89. Stevie Wonder - Songs in the Key of Life
90. Prince - Purple Rain
91. Death Cab For Cutie - Transatlanticism
92. The Postal Service - Give Up
93. Placebo - Meds
94. AFI - Sing the Sorrow
95. The Decemberists - The Crane Wife
96. Television - Marquee Moon
97. Bloc Party - Silent Alarm
98. Bloc Party - A Weekend in the City
99. Tool - Lateralus
100. The Jimi Hendrix Experience - Axis: Bold as Love
There's so much other good stuff to add (Emmylou Harris, Lou Reed, Pearl Jam, R.E.M. etc.)
Jagged Little Pill? 
