Preheat oven to 350 degrees F.
In microwave-safe bowl or in saucepan over low heat, melt butter and chocolate. Stir, remove from heat and set aside to cool.
In a large bowl beat eggs, corn syrup, sugar, salt and vanilla. Add chocolate mixture and mix well. Fold in pecans.
Pour batter in two prepared pie crusts. Bake 25-30 minutes, or until top is firm but pie is still soft inside.
Let cool for 20 minutes, then slice and serve warm with ice cream.