The most notable part of mine is

   # Set up my status line at the bottom of every frame
   caption always "%{gb}  %{ck}%m-%d %C %{gb}  %{gb}%?%-Lw%?%{ck}%n*%f %t%?(%u)%?%{gb}%?%+Lw%?"

I use tmux now, though. (it has a statusbar similar to the above by default)