It's been a while since I've heard about DCI, and still to this day I'm thrilled with the approach and the concept behind it.

It still lacks lots for experimentation in my case, but I find the paradigm really but really interesting.
So in that matter, here a list of resources that can introduce the paradigm in a better way:

Coplien: A good introduction

James Coplien - The DCI Architecture: Supporting the Agile Agenda from Øredev Conference on Vimeo.

Coplien: A good interview

Coplien: Another great interview

Reenskaug: A great overall view and history

Trygve Reenskaug - Object Orientation Revisited. Simplicity and power with DCI. from NDC Conferences on Vimeo.

And finally a thick (in content) book, a great read in general.