I'll look into this then, but you could start by explaining to my layman mind the difference between biochemical and biological functionality.
And why this is not the first step to eventually find functions to all the genetic code.
And didn't the ENCODE show that all of the genome was transcripted, sometimes even in the two directions ? (this is by memory, I may be wrong) Doesn't this hint to it having biological usage ?
For my part I think the Junk DNA claim is just an old argument from ignorance. That we do not know the function of a given strand of DNA does not make it functionless. I think that as our knowledge of genetics will grow in the future, the smaller the window of junk dna will be.