Lyn has a great post about Saikano:

Saikano (Saishuu Heiki Kanojo) is breaking my heart. I've only seen four episodes so far, and it's already one of my favorite anime. I can't tell you what it's about, exactly, but let's just say it lulls you into thinking that it's a sweet and realistic study of adolescent relationships, and then it punches you in the stomach. Hard.

I have to agree. I watched the fourth episode about 12 hours before she did and it really wiped me out. I wish they'd get episodes out a tiny bit faster. On another note. I also saw the second episode of Mao-Chan and it went to the other side of things and made me smile lots.