Well, first off, Bleach has a lot of suspense and exciting moments. In the earlier episodes, it's sort of boring since you have yet to know everything about the spirit world. Just beating up hollows and getting to know about the spirit world.
After Rukia is taken back to Soul Society, it gets a little more interesting. Ichigo starts to understand his powers more. His friends also start to find that they have some sort of special powers and accompany Ichigo on his journey to save Rukia. On the way, Ichigo and all his friends realize their powers a little more in depth. Emotion is everywhere making things a little more interesting.
During the Espada ark, I found that Ishida's fights are usually intelligent. Sado's fights usually have to do with force and basiclly who can punch each other hard enough to kill each other. Rukia's fight with Aaronierro was especcially emotional, since that Espada took the form of Rukia's former vice-captain, Kaien-dono. Ichigo's fights had something beteween emotional and sheer spiritual power.
Overall, this show does not need too much work, other than a filler ark butting into the middle of the Espada ark. The show is very humorous and full of suspense and you just can't stop watching. I would trully recommend this to all anime lovers.