Haikyuu is pretty nice! It's not a "awesome" anime, but you got addict really fast. It has a good team work (more than others sports-animes), all the characters are really explored (comparing, for example, to KnB which are more "individual"). It works really well in group and focus on secondary characters too. Also, I do think chemistry between Kageyama and Hinata (The two main characters?) work pretty well.
The plot is not a big deal. You know, this is a anime about sports after all. And recently we have a lot of this stuff (Kuroko no Basket, Free! Diamond no Ace, etc). I just think they could run from cliche in the season finale.
The first opening is really nice! (I liked more than the second) I enjoyed the both endings. The animation quality is good and I'm anxious for the season 2.
