Bump FX Java applet. Provides pseudo-3D effects on 2D images.
You can define the number of spotlights, as well as their speed, color and radius; and can define how they react to the user.

Next, let's try only 2 lights, larger radius, and no color shift.
(You can also click on this image to open the Latimer.org homepage in a new window)

Prev | Next

Find this, as well as more cool applets, at http://www.fxapplets.com/