Cute Aizen is cute. Cute Urahara is also cute, but I don't buy it anymore than I buy Aizen's cuteness.
Shinji: HOLY FUCK. His hair is one of the scariest things I've seen in my life. Thanks for freaking me out big time, KT.
Hiyori: Wow. I would never have seen it coming. I didn't know she was that smart, to be honest. Although I guess that's just more sneakiness. Really, she screams 'Look at me, I'm one of the illiterate hill folk' so loudly that I ought to have known that it wasn't true.
Ukitake's ponytail is love.
Apparently there's going to be a whole arc of backstory now, which is pretty sweet. At least there probably won't be many loooooong fight scenes, since Ichigo hasn't been born yet.