Preheat oven to 350 degrees. Line muffin cups with paper liners.
Prepare filling. Beat cream cheese, sugar, egg and salt until smooth and creamy. Stir in chocolate chips, and set aside
For cupcakes, stir together flour, sugar, cocoa, baking soda, and salt in large owl. Add water, oil, vinegar, and vanilla, and beat for 3 minutes, til smooth.
Fill muffin cups 2/3 full with batter. Then spoon one level Tbsp. of filling into center of each cupcake.
Bake 20 to 25 minutes, until toothpick inserted in cake portion comes out clean. Just before removing from oven, set one candy kiss in center of each cupcake and bake a bit longer, to allow candy to soften.
Remove from oven and let cool 5 minutes in pans. Transfer to wire racks to cool completely.