Here is an example of backlighting. I would 
classify it as a type of special effect. (I don't 
know what it could be classified as otherwise.) 
It's when a cel is lit from behind as it's being 
filmed. When this is done, the painters have to 
add a layer of thick black paint to the entire 
back of the image on the cel (so that the light 
doesn't shine through where it shouldn't). This 
paint is pretty obvious the first time you see 
it, it has a different type of shine to it and it 
will happily stick to everything in sight, 
including your dog. ^_^;;

I've been told that a lot of backlit cels are not 
filmed with backgrounds. I'm not completely sure 
if this is the case, but as you can see in the 
screen capture - there doesn't appear to be a 
background of any kind. But I have seen backlit 
scenes where it looks like some kind of *partial* 
background was used. Like cutouts used to create 
a shawdowing effect in the light around the 
image. But of course, now I'll be darned if I can 
remember the location of even one good example.

Many Sharp Smiles,
--Drac

(Cel is of Wong from the end of the first Psychic 
Force game's animated intro. **^_^**)