Wow, I didn't realize how many Brain's Base series there are this season. Not a bad thing though since they're currently one of my favorite animation studios.
Definites:
Natsume Yujinchou San - love love love this series; yes more supernatural slice-of-life please!
No.6 - premise sounds interesting and noitaminA
Usagi Drop - noitaminA
Kamisama Dolls - Read the scanslated chapters and it's pretty interesting. Also, Brain's Base.
Will wait for comments and feedback:
Sacred Seven
Blood-C
Kamisama no Memo-chou
There's also a few carry overs from Spring season so I don't want to pick up too many series.