Why is Itachi such a big deal, and why does everybody get pissy during discussins about him?

I think the coolest thing about Itachi is his compelexity -- we don't really have ANY definate answers on why he does what he does. He's scarier b/c we don't know what he's going to do next.

About the cosplay: definately some more effort could be done. A good school friend of mine made an Itachi cloak and actually appliqued on all the red clouds, lined the cloak in red and made the standing collar properly. Cloak patterns are dime a dozen, and you good get a perfectly acceptable cheap cotton to make it for $2 a yard at walmart.