Just heard a rumour that Jeff Glover is coming out with a new 2 DVD set. Not surprisingly it is about the D'arce choke (Brabo choke).
The list of techniques and pre-order:
I never knew so many D'arce variations (I don't know what a Marce choke is) existed. What is great, Jeff apparently shows a few escapes as well. I probably don't know any D'arce escapes