Preheat Oven to 350 degrees.
Line bottom of two 8" round cake pans and grease.
Bring margarine and coffee to a boil.
Whip eggs and sugar together on medium/high speed for approximately 1 1/2 minutes.
Melt chocolate chips in margarine/coffee mixture and mix until smooth.
Mix chocolate mixture into eggs.
Pour mixture into pans and bake in a water bath for approximately 1 hour.