Nassim Nicholas Taleb (author of Fooled by Randomness) was apparently linked to the Amaranth situation:

I did not directly hedge Amaranth?s books or exposure to blowups when I was in Greenwich ?I never worked directly with them though I shared offices with the group. I hedged a fund?s large exposure to Amaranth (or its predecessor) so long as it were exposed to their risks (before Amaranth got involved in commodities).

You can read more here (scroll down). I always find it interesting to see what people hire consultants for — in this case to help hedge a counterparty’s risk when dealing with exposure to Amaranth or Mother Rock.