Eh, here in america I tend to avoid events that involve cosplay. They usually have like 90% big 3 cosplay and maybe 10% video game.
Naruto cosplay is horrible for the most part(imagine fat + any naruto character), one piece is generally just open shirt jean shorts, and bleach is usually for the dedicated since they tend to go for the sword as well.
Personally I'm not that into cosplay. The only ones that i can remember are some evangelion asuka's and some jokish mgs references.
there are some DEDICATED people in japan though. I mean life-like you name it, its probably been done.
(oh and there is a giant gundam statue).