The threads purpose has been fulfilled and yet I sense we've barely scratched the surface. Dig a little deeper and let's keep the train rolling in the sequel to this thread:
http://www.gog.com/forum/general/top_comics_graphic_novels_of_alltime_gogcom_edition_v20 The list so far...
01. Global Frequency (Warren Ellis, 2002-2004)
02. Ronin (Frank Miller, 1983-1984)
03. Y: The Last Man (Brian K. Vaughan, 2002-2008)
04. Order Of The Stick
05. Daredevil: Born again (Frank Miller and David Mazzucchelli, 1986)
06. Sharaz-De: Tales from the Arabian Nights by Sergio Toppi
07. Scott Pilgrim (Bryan Lee O'Malley, 2004-2010)
08. The Sandman (Neil Gaiman, 1989-1996)
09. Batman: Year One (Frank Miller and David Mazzucchelli, 1988)
10. Frankenstein by Mary Wollstonecraft Shelley & Bernie Wrightson
11. Watchmen (Alan Moore, 1986-1987)
12. V For Vendetta (Alan Moore and David Lloyd, 1982-1988)
13. Batman: Knightfall series
14. Winterworld by Chuck Dixon and Jorge Zaffino
15. The Dark Knight Returns (Frank Miller, 1986)
16. Maus (Art Spiegelman, 1991)
17. From Hell (Alan Moore and Eddie Campbell, 1989-1996)
18. Fray (Joss Whedon, 2001-2003)
19. Batman: Mad Love (Paul Dini and Bruce Timm, 1994)
20. Asterix The Gaul (René Goscinny and Albert Uderzo, 1961)
21. Sin City: The Hard Goodbye (Frank Miller, 1991-1992)
22. Apocalypse: The Eyes Of Doom by Alexandro Jodorowsky and Juan Giménez
23. Kingdom Come (Mark Waid and Alex Ross, 1996)
24. X-Men: The Dark Phoenix saga (Chris Claremont and John Byrne, 1980)
25. Black Hole (Charles Burns, 1995-2005)
26. Give Me Liberty (Frank Miller & Dave Gibbons, 1990)
27. Bone (Jeff Smith, 1991-2004)
28. Fables (Bill Willingham and Mark Buckingham, 2002 - present)
29. Sex Criminals (Matt Fraction, 2013-Present)
30. Sigfried (Alex Alice, 2007 - 2011) Bande dessinée.
31. Kwaidan by Jung (Dark Horse 2004)
32. Fatale (Ed Brubaker, 2012-2014)
33. Appleseed (Masamune Shirow, 1985-1989)
34. Marvels (Kurt Busiek and Alex Ross, 1994)
35. Hellboy (Mike Mignola, 1994 - present)
36. Ghost World (Daniel Clowes, 1993-1997)
37. All Star Superman (Grant Morrison and Frank Quitely, 2006)
38. Preacher (Garth Ennis and Steve Dillon, 1995-2000)
39. Nausicaa Of The Valley Of The Wind (Hayao Miyazaki, 1982-1994)
40. Thorgal by Jean Van Hamme and Grzegorz Rosinski, from 2007-now Yves Sente and Grzegorz Rosinski
41. Concrete (Paul Chadwick, 1986-2012)
42: DMFA (2002?-current)
43. Seconds (Bryan Lee O'Malley, 2014)
44. Top Ten (Alan Moore, 1999)
45. Superman: For The Man Who Has Everything. (Alan Moore/Dave Gibbons 1985)
46. Valérian And Laureline (Pierre Christin & Jean-Claude Mézières, 1967-2010)
47. Blankets (Craig Thompson, 2003)
48. Love and Rockets (Gilbert, Jaime, and Mario Hernandez, 1982-current)
49. Saga (Brian K. Vaughan, 2012-Present)
50. Chosen (Mark Millar, 2004)
51. Transmetropolitan (Warren Ellis, 1997-2002)
52. X-Men: Age Of Apocalypse crossover (various, 1995-1996)
53. X-Men: God Loves, Man Kills (Chris Claremont and Brent Anderson, 1982)
54. The Surrogates by robert venditti and brett weldele (2005-2006)
55. Cerebus (Dave Sims, 1997-2004)
56. The Boys (Garth Ennis, 2006-2012)
57. The Saga Of The Swamp Thing (Alan Moore, 1983-1987)
58. The Nikopol Trilogy (Enki Bilal, 1980-1992)
59. Persepolis (Marjane Satrapi, 2000-2003)
60. The Airtight Garage (Moebius, 1976–1979)
61. Planetary (Warren Ellis, 1998-2009)
62. Elf Quest
63. The Walking Dead (Robert Kirkman, 2003-Present)
64. Prince Valiant
65. Jimmy Corrigan: The Smartest Kid On Earth (Chris Ware, 1995-2000)
66. Ghost Rider "Resurrected"
67. TMNT
68. Chew (John Layman, 2009-Present)
69. Spider-Man: Kraven's Last Hunt
70. 300 (Frank Miller, 1998)
71. The Incredible Hulk (Peter David's run)
72. Alias (Brian Michael Bendis, 2001-2004)
73. The Maxx (Sam Kieth, 1993-1998)
74. Usagi Yojimbo (Stan Sakai, 1984-present)
75. Transformers: More Then Meets The Eye: Season 1 (issues 1-21, james roberts and alex milne, 2012-2013)
76. Akira (Katsuhiro Otomo)
77. The Savage Dragon 1-200 (Erik Larsen, 1993-present)
78. Golddigger 1-215 (Fred Perry, 1990-present)
79. Groo The Wanderer (Sergio Aragonés & Mark Evanier)
80. 100 Bullets (Brian Azzarello, 1999-2009)
81. Lone Wolf And Cub (Kazuo Koike & Goseki Kojima, 1970-1976)
82. Spider-Man: The Clone Saga (1994-1996)
83. Astonishing X-Men (Joss Whedon, 2004-2008)
84. Next Men (John Byrne)
85. Hawkeye a.k.a. Hawkguy (Matt Fraction, 2012-Present)
86. New X-men 113-150 (grant morrison frank quietly igor kordy ethan van sciver 2001-2004)
87. Shade The Changing Man (Peter Milligan & Chris Bachalo)
88. Miracleman 1-24 (1982-1994)
89. Doom Patrol (Grant Morrison)
90. claremonts first xmen run X-men 94-276 x-men v 2 1-3 (1976-1991)
91. The Incal (Moebius/Jodorowsky)
92. New Gods (Jack Kirby)
93. Corto Maltese (Hugo Pratt)
94. The Shadow (Andy Helfer, Bill Sienkiewicz & Kyle Baker)
95. L'Immortel by Eric Puech
96. new mutants v1 18-34 (chris claremont and bill siekiwicz)
97. Strangers In Paradise (Terry Moore, 1993-2007)
98. Watsuki Nobuhiro's Rurouni Kenshin
99. Asterios Polyp by David Mazzucchelli (2009)
100. Astro City (Kurt Busiek, Brent Anderson & Alex Ross)
101. Superman: Red Son (Written by Mark Millar, art by Dave Johnson, Kilian Plunkett)