Panning is an import establishing shot that can show off a large landscape. Like tilt shots, panning shots are overused because of their simplicity, and are often poorly executed. Shown below is an example of how to perform a panning shot.
Panning shots have to be executed in a way that they are smooth. This can be done by either learning how to operate your camera on a locked tilt axis, or hire a decent camera operator, to keep the panning pure. This will greatly increase the look of your film.