If you ever needed a script to suspend your PC such as for Transmission after your torrent completes or to suspend your computer at a certain time of night.

It is gnome-friendly too. Well here it is:

#!/bin/sh
dbus-send --system --print-reply --dest="org.freedesktop.UPower" /org/freedesktop/UPower org.freedesktop.UPower.Suspend

Be sure to make the file executable, you can do this by:

chmod +x yourScript