SHAFT

I personally like this animation studio.The stories aren't on 100% action, and they make damn good animation.

They produced Bakemontegari(first opening, it changes i think for every episode)
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Negima!?(one of my fav manga)
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Sayonara Zetsoubo Sensei: (great anime)

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oh and Maria Holic(the only comedy lesbian anime i think i've seen thats actually good)