Here is everything nicely organized and nodes grouped: For a point light you can actually skip the subtract. This can also be used with a point light, when the bottom most node is used instead of the geometry normal. Some artifacts appear near the edge of the area light when using constant strength, therefor a slight adjusment is required. I will contact the devs about this, since the normal has no meaning for other lights now, it could contain the direction of the object. Other light sources are not capable of providing their direction to the node system.
An important note is that this solution only works with area lights, since the normal is only provided for those. Since I answered this, Blender was updated several times, and I had to update my solution also. I got a solution that is easier to understend. Now that you have asked and I tried to remember,
And you can move the Sun Beam X and Y value as if the spot was moving behind.I have a line-laser and a plane-laser node setup. The Sun Beam will create the beams behind, the Glare will fake a bit of glow in front of the black title. I put some blur here and there, but the important things are to put a Sun Beams effect after the white title and a Glare effect just before the Output.
In the Node Editor / Compositing, organize your nodes: Basically you need to mix ( Alpha Over) the render layer with the black title with the render layer with the white title.
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