According to poll conducted at Biglobe website, slice of life comedy anime series Danshi Koukousei no Nichijou was voted by anime fans as best anime series for the winter season.

The said anime featuring three boys who knows nothing about girls beat supposedly crowd favorite Nisemonogatari, sport romance anime Chihayafuru, horror mystery anime Another and season 4 of Natsume Yuujinchou.

Rankings:

1. Danshi Koukousei no Nichijou
2. Nisemonogatari
3. Chihayafuru
4. Another
5. Natsume Yuujinchou 4
6. Senki Zesshou Symphogear
7. Guilty Crown
8. Highschool DxD
9. Lagrange: The Flower of Rin-ne
10. Ano Natsu de Matteru
11. Mirai Nikki
12. Inu x Boku SS
13. New Prince of Tennis
14. Papa no Iu Koto wo Kikinasai!
15. Kill Me Baby
16. Tantei Opera Milky Holmes 2
17. Bodacious Space Pirates
18. Persona 4
19. Smile Pretty Cure!
20. Amagami SS+
21. BRAVE10
22. Bakuman 2
23. Thermae Romae
24. Black Rock Shooter TV Animation
25. Hunter x Hunter

A total of 19,868 fans joined the poll that ended last April 20, 2012.

[Source]