Hikaru no Go
I've watched 58 total episodes out of 75 (sometimes I really hate that rule of 75). Needless to say, I'm in love with it. I'm experiencing a phenomenon watching this that I normally only experience when playing Street Fighter. When two pro players go up against each other, both at very high skill, the tension between the two players creates a very unique feeling. That self-improvement by testing each other one-on-one so that one of you will eventually reach the highest peak of gameplay, it's better than sex. I'm going to have a more in-depth review once I finish it. The only thing that bugs me so far (I'm watching Japanese version) is that Hikaru's voice doesn't seem to change despite clearly going through puberty. I can now understand why people were upset about Goku's voice in Dragon Ball Z being essentially identical to his kid form in Dragon Ball.
More to come as I finish the anime. In the meantime, I recommend anyone who actually reads this thing check it out. It's available on Netflix.