A series of vaguely related links I stumbled thru while doing my normal searches:
Dark Night and What Enlightenment is Like
A pragmatic dharma practitioner lists a few characteristics of enlightenment. A little bit idealized here and there, but a good general list.
How Understanding the Process of Enlightenment Could Change Science
Jeff Warren with some interesting stuff about people having cessations/fruitions in the fMRI machine.
On Enlightenment: An Interview with Shinzen Young
With his student Har-Prakash Khalsa.
Benefits of Long-Term Meditation with Shinzen Young
More enlightenment talk from Shinzen, a transcript from the Thinking Allowed television series.
Levels of Organization in General Intelligence
This is a long treatise on artificial intellignece. I didn't bother to read the thing, but I noticed the abstract simplified intelligence down to the following organization: code > sensory modalities > concepts > thoughts > deliberation. It's kind of like dependent origination.