is there anyway to get the backends IP address from the PID?

Hi,
Does anyone know if there is a way to get the backends IP address from
the PID?
I am using the view pg_stat_activity and it would be nice if it would
also display the IP address along with the PID.

I can see the IP address when I do a ps -ef but it would be nice to be
able to get it via a sql command.

Thanks,

Tony Caduto
http://www.amsoftwaredesign.com