its not all about ichigo and the shinigami...Mine is Sado Yastora for his life and cool trasnformation and definately the anime version of his El Diablos attack...Huge Skull is formed as a creater inpact of his move.
Aside from the non shinigami I like
Toushiro for his well everything,
The 69 tattoo faced guy for his cool sword techniques,
Kenpachi well for his insane battle fights,
Ichigo for his Bankai and Hollow transformation
From the Vaizards only the guy with the white hair and knife as a weapon for his fighting style and also cause he's also serious not like the other vaizards who are just plain uncool
from the Espada
Grimjaw for everything (Same reasons like Toushirou...style, bankai/release...etc)
Ulquiorra for his seriousness and coolness in battle
and from the non nons Tatsuki (ichigo and orihime's friend) (I think thats her name
)
That sums all my list Sorry for the lOng posT ;P