If you want the full list of everything I heard, with comments, go here:
every 2006 release I've heard, with comments, in order (really long post)
This is just the ones I liked to some extent (obviously towards the end are ones that barely qualify, but the first 50 are solid):
1. Mastodon - Blood Mountain
2. Unexpect - In a Flesh Aquarium
3. Stolen Babies - There Be Squabbles Ahead
4. The Mars Volta - Amputechture
5. Martyr - Feeding the Abscess
6. Mirthkon - The Illusion of Joy
7. To-Mera - Transcendental
8. Novembre - Materia
9. Actual Time - Force of Patterns
10. Dysrhythmia - Barriers and Passages
11. Soulscar - Endgame
12. Hammers of Misfortune - The Locust Years
13. Andromeda - Chimera
14. Giant Squid - Metridium Fields
15. Hypnotheticall - Promo 2006
16. Edenshade - The Lesson Betrayed
17. Pure Reason Revolution - The Dark Third
18. Disillusion - Gloria
19. Zaar - Zaar
20. Persefone - Core
21. Intronaut - Void
22. Isis - In the Absence of Truth
23. Canvas Solaris - Penumbra Diffuse
24. Present Tense - Automatic Happy
25. Estradasphere - Palace of Mirrors
26. Sadus - Out For Blood
27. White Willow - Signal To Noise
28. Weird Al Yankovic - Straight Outta Lynwood
29. Agalloch - Ashes Against the Grain
30. Madder Mortem - Desiderata
31. Obsidian - Emerging
32. Neglected Fields - Splenetic
33. Zero Hour - Specs of Pictures Burnt Beyond
34. Into Eternity - The Scattering of Ashes
35. Wolverine - Still
36. Spiritual - Pulse
37, Aghora - Formless
38. Korum - Ockhams Razor
39. Paatos - Silence of Another Kind
40. Kopecky - Blood
41. Nebelnest - Zepto
42. Sleep Terror - Probing Tranquility
43. Twisted Into Form - Then Comes Affliction to Awaken the Dreamer
44. Sikth - Death of a Dead Day
45. Age of Nemesis - Psychogeist
46. Frozen - Enemy Soil
47. Prototype - Continuum
48. The Nemesis Theory - Hypnopedia
49. Trepalium - Alchemik Clockwork of Disorder
50. Solitude Aeturnus - Alone
51. OSI - Free
52. Decadence - 3rd Stage of Decay
53. Zillah - Substitute for a Catastrophe
54. Katagory V - The Rising Anger
55. Insomnium - Above the Weeping World
56. The Gathering - Home
57. Amorphis - Eclipse
58. Anata - The Conductors Departure
59. Yakuza - Samsara
60. Scenery - Continuity
61. Communic - Waves of Visual Decay
62. Year Zero - Time
63. Unreal Overflows - Architecture of Incomprehension
64. Persuader - When Eden Burns
65. All That Remains - The Fall of the Ideals
66. One Man Army and the Undead Quartet - 21st Century Killing Machine
67. Mew - And the Glass Handed Kites
68. Dark Flood - The Dead Lines
69. Senate - The Great Northern Scenekill
70. Cellador - Enter Deception
71. Thessera - Fooled Eyes
72. Textures - Polars
73. Gorod - Leading Vision
74. Adagio - Dominate
What? no black metal?
every 2006 release I've heard, with comments, in order (really long post)
This is just the ones I liked to some extent (obviously towards the end are ones that barely qualify, but the first 50 are solid):
1. Mastodon - Blood Mountain
2. Unexpect - In a Flesh Aquarium
3. Stolen Babies - There Be Squabbles Ahead
4. The Mars Volta - Amputechture
5. Martyr - Feeding the Abscess
6. Mirthkon - The Illusion of Joy
7. To-Mera - Transcendental
8. Novembre - Materia
9. Actual Time - Force of Patterns
10. Dysrhythmia - Barriers and Passages
11. Soulscar - Endgame
12. Hammers of Misfortune - The Locust Years
13. Andromeda - Chimera
14. Giant Squid - Metridium Fields
15. Hypnotheticall - Promo 2006
16. Edenshade - The Lesson Betrayed
17. Pure Reason Revolution - The Dark Third
18. Disillusion - Gloria
19. Zaar - Zaar
20. Persefone - Core
21. Intronaut - Void
22. Isis - In the Absence of Truth
23. Canvas Solaris - Penumbra Diffuse
24. Present Tense - Automatic Happy
25. Estradasphere - Palace of Mirrors
26. Sadus - Out For Blood
27. White Willow - Signal To Noise
28. Weird Al Yankovic - Straight Outta Lynwood
29. Agalloch - Ashes Against the Grain
30. Madder Mortem - Desiderata
31. Obsidian - Emerging
32. Neglected Fields - Splenetic
33. Zero Hour - Specs of Pictures Burnt Beyond
34. Into Eternity - The Scattering of Ashes
35. Wolverine - Still
36. Spiritual - Pulse
37, Aghora - Formless
38. Korum - Ockhams Razor
39. Paatos - Silence of Another Kind
40. Kopecky - Blood
41. Nebelnest - Zepto
42. Sleep Terror - Probing Tranquility
43. Twisted Into Form - Then Comes Affliction to Awaken the Dreamer
44. Sikth - Death of a Dead Day
45. Age of Nemesis - Psychogeist
46. Frozen - Enemy Soil
47. Prototype - Continuum
48. The Nemesis Theory - Hypnopedia
49. Trepalium - Alchemik Clockwork of Disorder
50. Solitude Aeturnus - Alone
51. OSI - Free
52. Decadence - 3rd Stage of Decay
53. Zillah - Substitute for a Catastrophe
54. Katagory V - The Rising Anger
55. Insomnium - Above the Weeping World
56. The Gathering - Home
57. Amorphis - Eclipse
58. Anata - The Conductors Departure
59. Yakuza - Samsara
60. Scenery - Continuity
61. Communic - Waves of Visual Decay
62. Year Zero - Time
63. Unreal Overflows - Architecture of Incomprehension
64. Persuader - When Eden Burns
65. All That Remains - The Fall of the Ideals
66. One Man Army and the Undead Quartet - 21st Century Killing Machine
67. Mew - And the Glass Handed Kites
68. Dark Flood - The Dead Lines
69. Senate - The Great Northern Scenekill
70. Cellador - Enter Deception
71. Thessera - Fooled Eyes
72. Textures - Polars
73. Gorod - Leading Vision
74. Adagio - Dominate
What? no black metal?