I just love these backstory chapters about Isshin. He's such a cool character, he just hasn't had the chance to show it off, because he barely had any screentime at all until now. He's goofy, he's a bit childish, but he's also very responsible and his apperance in the last page was worthy of a true hero - Masaki's personal hero. =)
Now, this chapter finally explained all of Ichigos weird powers. Human, Quincy, Hollow and Shinigami all mixed together, oh boy, poor Ichigo. xD
I hope Isshin will become a bigger role altogether now and will probably fight alongside the Shinigami. I'd love to see that, he knows many of the Shinigami from his time as a captain and if all his powers have returned, he should be able to stand his ground pretty well.
It has been a long time since Bleach has gotten me interested into a character this much.