##Install Homebrew

ruby -e "$(curl -fsSL https://raw.github.com/mxcl/homebrew/go/install)"

##Install Fish Shell

brew install fish

##Allow Fish as a type of shell

echo "/usr/local/bin/fish" | sudo tee -a /etc/shells

##Run configure

bin/configure

##iTerm 2

http://code.google.com/p/iterm2/downloads/list

You will find iterm related goodness in the iterm directory. I use Inconsolata 18pt and the Solarized Dark iTerm color profile (also provided)