Here's some I would recommend:
1. Fairy Tail
2. Inuyasha/The Final Act
3. High School DxD/New
4. Code Geass/R2
5. Cardfight Vanguard/Asia Circuit/Link Joker
6. Black Cat
7. Naruto Shippuden
8. One Piece
9. Fullmetal Alchemist Brotherhood
10. Sword Art Online
11. Yu Yu Hakusho
12. Spice and Wolf/II
13. Rosario + Vampire/CAPU2
14. Attack On Titan
15. Soul Eater
16. Kaze No Stigma
17. Nura: Rise of the Yokai Clan/Demon Capital
18. D.Gray-Man
19. Witchblade
20. Romeo X Juliet
21. Rave Master
22. Date A Live
23. Highschool of the Dead
24. Sankarea
25. Blue Exorcist
26. The Legend of the Legendary Heroes
27. A Certain Magical Index
28. Death Note
29. The Devil is a Part-Timer
30. Spiral: The Bonds of Reasoning
31. Neon Genesis Evangelion
32. Shakugan No Shana/2/Final
33. Shaman King
34. Buso Renkin
35. Dragonaut: The Resonance
36. Infinite Stratos
37. Freezing
38. Guilty Crown
39. Angel Beats
40. Elfen Lied
41. Cowboy Bebop
42. Naruto
43. Digimon Frontier
44. Wolf’s Rain
45. Magi: The Labyrinth of Magic
46. Marvel Anime: X-Men
47. xxxHOLiC
48. Demon King Daimao
49. Marvel Anime: Blade
50. Air Gear
51. Beelzebub
52. Digimon Data Squad
53. Marvel Anime: Wolverine
54. Blassreiter
55. Devil May Cry
56. Gurren Lagann
57. Rurouni Kenshin
58. Aquarion Evol
59. BlazBlue: Alter Memory
60. Is This A Zombie/Of the Dead
61. Accel World
62. Fate/Zero
63. Gargantia on the Verdurous Planet
64. Blood +
65. Steins;Gate
66. Dance in the Vampire Bund
67. Darker than Black
68. Karneval
69. Aesthetica of a Rogue Hero
70. Campione
71. Historys Strongest Disciple Kenichi
72. Sengoku Basaru
73. Another
74. Ikkitousen
75. Kannazuki No Miko
76. Soultaker
77. Samurai 7
78. Yu-Gi-Oh 5D’s
79. Black Lagoon
80. Zatch Bell
Akame ga Kill Psycho-Pass Black Lagoon Bakemonogatari Tokyo Ghoul Gosick Tenjou Tenge Canaan Kara no Kyoukai Murder Princess Guilty Crown GetBackers Hyakka Ryouran Samurai Girls Magi To aru majutsu no index Sacred Seven Princess Lover Boku wa Tomodachi ga Sukunai Chaos;HEAd Air Gear Corpse Party - Tortured Souls - Bougyakusareta Tamashii no Ju (This is extremely gory) (Just a warning)
Also Kissanime.com has alot of アニメ that aren't well-known and あなた can look there as well.
NARUTO -ナルト- Shippuden Campione Medaka Box Abnormal Uta no Prince Sama Special A Legendary Heroes Say I 愛 You Phi-Brain Magical Warfare Black Bullet Kampfer Aria the Scarlet Ammo Attack on Titan Black Butler Cat Planet Cuties Cowboy Bebop Deadman Wonderland Bleach Fairy tail Sword art online Arcana Famiglia Princess ゼリー 魚 Dragon ball z Hunter X Hunter One Piece Jyu oh sei