Well, in comparision with the fall season, winter is pretty bleak.
First, shows that I've seen already:
Minami-Ke Okaeri - first episode was ok, so I'll be following this. But I'm one of the few people who liked second season as much as the first, so your mileage may vary.
Sora wo Kakeru Shoujo - I had my doubts, but once Leopard was introduced they all ceased to be important. It made me laugh out loud quite a few times, so I'll be watching it.
Asu no Yoichi! - Manga was okay, voice cast is really good, and even though first episode wasn't all that great I'll probably be following this.
Maria†Holic - Well, I do like yuri... But I don't like traps. And I was watching a lot of shows directed by Akiyuki Shinbo lately, and I'm getting kind of tired. I'll definitely watch this show, but I'll wait a bit before deciding whether to follow it weekly or not.
Akikan - No, just... no. Everything about that show is fail.
Shows I've not seen yet, but want to at least try:
Hetalia Axis Powers - It has potential to be epic, but we'll see.
Kemono no Souja Erin - Good fantasy is always appreciated, but good source material isn't always a guarantee of succes.
White Album - If it's not too emo might be interesting.
Ride Back - Seems interesting, and I have a weakness for white dresses.
Sora wo Miageru Shoujo no Hitomi ni Utsuru Sekai - Well, it IS by KyoAni... But it seems kind of meh. I have the ovas sitting on my HD, so I'll watch them and then decide.
I'll be checking other shows too, but that's abut it when it comes to shows that have piqued my interest. There's of course a lot of shows that continue from the fall which I'll be watching, since fall season was particulary awesome. And there are OVA's too, but I don't really consider them a part of a season.