Step 1
   Open a new image about 300x50 pixels.
   With this image the background color
   doesn't matter. Set the foreground
   color once the image is created to
   white and the background color black.

Step 2
   Now create a new layer by shift+ctrl+n.
   Then select the gradient tool and stretch
   the line from one side to the other.

Step 3
   Now you should have a white to black
   gradient in your window. From
   the file menu select Filter>Noise
   then select Add Noise from that menu.
   Now change the following parameters,
   Amount: 714 Distribution: Gaussian
   and then check the box that says
   Monochromatic.
   Note: You do not have to do the exact
   parameters listed, so experiment!

Step 4
   Now you should have what looks like
   snow on the T.V. From the
   file menu select Filter | Blur |
   then from that menu select Motion Blur.
   Now change the following parameters,
   Angle: 48 Distance: 30.
   Note: You do not have to do the exact
   parameters listed, so experiment.
   For the image above I used some text
   with a little texture and pillow emboss
   effect.