Heat oven to 375 degrees. Chop 4 chocolates into small pieces; place in small microwave-safe bowl. Set aside.
Unroll dough to form 8 triangles. Place one chocolate at center of wide end of each triangle. Starting at wide end, roll to opposite point; pinch edges to seal. Place rolls, pointed side down, on ungreased cookie sheet. Curve into crescent shape.
Bake 10 minutes or until lightly browned. Microwave reserved chocolate at MEDIUM (50%) 30 seconds or until melted when stirred; drizzle over warm crescents. Serve slightly warm.