Supercommentary is a commentary in which someone comments on another's commentary. For instance, in example 1 (below), the director comments on the movie itself, while the producer comments on the director's comments as well. This can also be extended to higher levels, such as example 2 (also below), in which the cast comment on the movie, the director comments on their commentary, the producer comments on the director, and so on.
Example 1:
Movie (0)
Director's Commentary (1)
Producer's Supercommentary (2)
Example 2:
Cast Commentary (1)
Director's Supercommentary (2)
Producer's Supersupercommentary (3)
Critic's Supersupersupercommentary (4)
Executive's Supersupersupersupercommentary (5)-- Alx_xlA, Feb 04 2009 No comment!-- xenzag, Feb 05 2009 By refusing to comment, Xenzag reflects the fear of establishment society in the face of the participatory youtube-enabled social culture embodied by this bold concept!-- Ninjacrat, Feb 05 2009 Can it all then go around again, so the cast comment on the executive's Super^4 commentary.... Would of course be much better if no-one liked each other, but that goes without saying <supercommentary> MiMM messed that bit of his anno up, I bet he wishes he had a delete key</s>-- MadnessInMyMethod, Feb 05 2009 The hordes before and after this note never really knew exactly what it meant. Though their perspectives were sound and exciting.-- daseva, Feb 05 2009 I think meta is a more appropriate prefix than super.-- xaviergisz, Feb 05 2009 Wouldn't meta commentary be a commentary on the subject of commentaries in general, rather than one based on a specific instance of commentary? I think super fits just fine.-- zen_tom, Feb 05 2009 This would work best on reality tv shows. We have to do something in order to make them watchable.-- wagster, Feb 05 2009 random, halfbakery