dragmio wrote:
I often find myself playing against white who opens with
fianchettoeing his bishops first. What is the best response to that,
and what's that opening called anyway?

I'm no expert at all, far away, but maybe that helps you:
On 1. e4 e5 2. Bc4
I always play 2...Nf6 - to prevent moves like Qh5 attacking f7. I think that
the best move to make.

Isn't it called "Italian"?
Alex