I love night shots! Here's an idea:
Set the F-stop so that you can shoot a 30 second exposure. Put the camera on a tripod, obviously. For 20 seconds of the exposure go stand in the photo. You'll look like a ghost in the actual image. Here's an example of my girlfriend and I standing in front of the Mark Hopkins in San Francisco at night (as ghosts):
Here's another example:
A few more night shots:
Lastly, an image taken around noon but looks taken at night:
