I bookmarked this one but haven't made it yet. http://www.juliehasson.com/2012/10/choc ... uffle-pie/
It looks fluffier than other ones.
The one I made was this one, with a GF chocolate cookie crust: http://chocolatecoveredkatie.com/2011/0 ... fudge-pie/
I added too much chocolate by mistake and it was dense but delicious.
I second Julie's choc pie. Haven't made it yet, but I have all my ingredients and the recipe printed out ;)