Overall only about 3 of these interest me; Ichiban, B Gata H Kei and Senko no Night Raid.

Senko no Night Raid - Spies from a secret organization? This might be interesting, based on that on paragraph description. I'll have to fish for a trailer.
Iron Man - Oh Marvel...now that you're owned by Disney, there's no depths to which you sink that will surprise me.
Yojo-han Shinwa Taikei - A little strange slice of life. I wonder if college students do as much weed in Japan as they do here
Arakawa under the bridge - WTF is up with that Starhead man? This might be interesting!
Rainbow - A dark period piece which will likely have tons of teen angst. It'll be a hit!
House of Five Leaves - An Edo period piece about a ronin serving under a gang leader. Fun?
Heroman - Stan Lee. I think I covered my feelings about you with Iron Man. Still...it IS Studio Bones. Might be worth checking out.
Ookiku Furikabatte 2nd season - I don't care for baseball at all. Next.
Angel Beats - a yuri anime about hot angels with guns? Sign me up!
Ichiban Ushiro no Dai Maou - I must confess, I love fantasy anime about magicians in magical academies. Zero no Tsukaima's first season had me hooked, the 2nd too, but the 3rd fell flat. Hopefully this one can save my faith in magical anime-kind.
Working! - Restaurant-centered anime. I don't think there's anything particularly interesting about that premise.
Giant Killing - Football. No thanks.
Hetalia Axis Powers 3rd season - I'll watch the first two seasons and get back to you on this...
Ring ni Kakero 1 Shadow - Fight-o!
Major 6th season - 6 seasons of baseball? Thanks but I wouldn't get past the 1st...
B Gata H Kei - A virgin who aspires to have 100 casual sex encounters, but focuses on a single boy...I'm watching this.
Kaichou wa Maid-sama! - What is it with Japan and maids? Maids in school for that matter. Hayate no Butler suits all my needs in this area.
Hakouki: Shinsengumi Kitan - Shinsengumi and magic are always a winning combo, right?
Uragiri wa Boku no Namae wo Shitte Iru - A whiny little empath meets a guy who might be his older brother. Meh.
D.C. ~Da Capo~ Ext - Meh.
K-ON 2nd season - YES!!!!!
Mayoi Neko Overun - A nekogirl in a sweet's shop. That'll work.
Kiss x Sis - Eh...next.
Ikkitousen: Xtreme Xecutor - It's Xtreme!
Shin Koihimi+Musou Otome Tairan - Romance of the Three Kingdoms. Can't get enough of this stuff...wait, yes I can.
Yutori-chan - "the first anime distributed by email". Huh...worth a look.
SD Gundam Sangokuden - Romance of the Three Kindgoms...with SD Gundams...meh, I have a soft spot for the little retarded mechs anyway.
Bakugan Battle Brawlers New Vestroia - Hey "Cartoon" Network, here's that new season you want...
Hime Chen! Otogi Chikku Idol Lilpri - Distributing cards to get kids to do stuff. There's a bright idea. Maybe we'll avoid more high school dropouts...