In "The Departed," who plays the mob boss Frank Costello?

Jack Nicholson

What is the traditional centerpiece of Christmas dinner in the United Kingdom? What soft, creamy French cheese is named after a region in northern France? Which band is famously known for their album "Rumours"? What hormone regulates body growth and is produced by the pituitary gland? What was the secret network called that helped fugitive slaves escape to free states and Canada?