What is it..? an LED ... is it a mini Cathode Ray TV ?

 

construction of an LED...

 

Two peices of metal... one that has a little more 'chunk' ... the E flows to ..well actually I'm not sure? - the chunk or to the Tip (confusion arises, with actual potentila flow and circuit flow)

 

This 'spark' produces light!!!

 

What G pattern of the material is producing light?

http://en.wikipedia.org/wiki/LED

so the spark plugs in my car aren't LED's?

How about if I put the spark plug in a magnetron of sorts?

Nope they are not LED's.

 

And I don't quite know what you mean, or why this would turn a spark gap into an LED?

if you put a spark plug in a magnetron then you'll get a lot of sparks. no LED though.