Don't know where I got this list from but I came across a piece of paper in which I copied them all down. Don't want to keep the doodled paper but do want to keep the list.
1. Ulysses, Joyce
2. The Great Gatsby, Fitzgerald
3. A Portrait of the Artist as a Young Man, Joyce
4. Lolita, Nabokov
5. Brave New World, Huxley
6. The Sound and the Fury, Faulkner
7. Catch 22, Heller
8. Darkness at Noon, Koestler
9. Sons and Lovers, Lawrence
10. Grapes of Wrath, Steinbeck
11. Under the Volcano, Lowry
12. The Way of All Flesh, Butler
13. 1984, Orwell
14. I, Claudius, Graves
15. To The Lighthouse, Woolf (finally, a woman!)
16. An American Tragedy, Dreiser
17. The Heart is a Lonely Hunter, McCullers
18. Slaughterhouse Five, Vonnegut
19. Invisible Man, Ellison
20. Native Son, Wright
21. Henderson the Rain King, Bellow
22. Appointment in Samara, O'Hara
23. U.S.A. (Trilogy), Dos Passos
24. Winesburg, Ohio, Anderson
25. A Passage to India, Forster
26. The Wings of the Dove, James
27. The Ambassadors, James
28. Tender is the Night, Fitzgerald
29. The Studs Lonigan Trilogy, Farrel
30. The Good Soldier, Ford
31. Animal Farm, Orwell
32. The Golden Bowl, James
33. Sister Carrie, Dreiser
34. A Handful of Dust, Waugh
35. As I Lay Dying, Faulkner
36. All the King's Men, Penn
37. The Bridge of San Luis Rey, Wilder
38. Howard's End, Forster
39. Go Tell it on the Mountain, Baldwin
40. The Heart of the Matter, Greene
41. Lord of the Flies, Golding
42. Deliverance, Dickey
43. A Dance to the Music of Time, Powell
44. Point Counterpoint, Huxley
45. The Sun Also Rises, Hemingway (I love love love this title)
46. The Secret Agent, Conrad
47. Nostromo, Conrad
48. The Rainbow, Lawrence
49. Women in Love, Lawrence
50. Tropic of Cancer, Miller
51. The Naked and the Dead, Mailer
52. Portnoy's Compaint, Roth
53. Pale Fire, Nabokov
54. Light in August, Faulkner
55. On the Road, Kerouac
56. The Maltese Falcon, Hammett
57. Parade's End, Ford
58. The Age of Innocence, Wharton
59. Zuleika Dobson, Beerbohm
60. The Moviegoer, Percy
61. Death Comes for the Archbishop, Cather
62. From Here to Eternity, Jones
63. The Wapshot Chronicles, Cheever
64. The Catcher in the Rye, Salinger
65. A Clockwork Orange, Burgess
66. Of Human Bondage, Maugham
67. Heart of Darnkness, Conrad
68. Main Street, Lewis
69. House of Mirth, Wharton
70. The Alexandria Quartet, Durrell
71. A High Wind in Jamaica, Huges
72. A House fo Mr. Biswas, Bauoayk
73. The Day of the Locust, West
74. A Farewell to Arms, Hemingway
75. Scoop, Waugh
76. The Prime of Miss Jean Brodie, Spark
77. Finnegan's Wake, Joyce
78. Kim, Kipling
79. A Room With a View, Forster
80. Brideshead Revisited, Waugh
81. The Adventures of Augie March, Bellow
82. Angle of Repose, Stegner
83. A Bend in the River, Naipad
84. The Death of the Heart, Bowen
85. Lord Jim, Conrad
86. Ragtime, Doctorow
87. The Old Wives Tale, Bennett
88. The Call of the Wild, London
89. Loving, Green
90. Midnight's Children, Rushdie
91. Tobacco Road, Caldwell
92. Ironweed, Kennedy
93. The Magus, Fowles
94. Wide Sargasso Sea, Rhys
95. Under the Net, Murdoch
96. Sophie's Choice, Styron
97. The Sheltering Sky, Bowles
98. The Postman Always Rings Twice, Cain
99. The Ginger Man, Donleavy
100. The Magnificent Andersons, Tarkington