Deep pass

You'll have to write your own custom shader to get the values and be using open EXR v2, (currently in beta). but the problem is that Nuke only supports the renderman file type for now. I saw a press release detailing the price reduction of renderman down to a thousand, so if it helps the company, push your superiors for it. Not to mention it's kinda just for the top of the line fx houses anyway.
-Keith

Reality? What did you make it?