Mine

set -g status off
set -g prefix C-a
unbind C-b
bind a send-prefix
bind C-a last-window
bind C-Space next
bind C-BSpace prev
bind Space next
bind BSpace prev
bind n next
bind p prev
bind C-n next
bind C-p prev
bind C-d detach
bind '"' choose-window
unbind k

set -g set-titles on
set -g set-titles-string "#T #W <#I>"
set -g display-time 1337 # because otherwise the messages time out FAR too quickly for me to even read them
setw -g utf8 on
setw -g xterm-keys on

new -x 132 -y 40