Yeah, you guys are answearing a lot of my little side-thought questions but I'm still confused about how Aizen is trying to become a Hollow. Kiskue (in episode #68) was explaining what Aizen had to do to unlock the full potenial of the Hogyoku and become a Hollow. Yeah that's good to know and all but why/how is that all required for him to become one? I understand it allows him to be in unison with a hollow but does he have to fight against his inner hollow like Ichigo did when he was sent to his hollow-counterpart's world? It's a lot to debate and think about trying to conclude Aizen's method.

Also, well this is a spoiler so.....

Spoiler:
In episode #68, Ichigo wasn't able to use his Bankai against those 3 people that was helping Urahara test him. What's the deal with that when it has been only a couple days he's been outside of the World Of The Living? Is because a Soul Reaper's power is weakened being there for so long or is it a certain condition that a Soul Reaper has to be at always to achieve Bankai? In that case, wouldn't it be better if he trained there instead to make his training worth while and be able to endure a longer period when using his Bankai? This question kinda seems obvious to me but I want to know yall's opinion.....