Rayburn: A man can be an artist... In anything, food, whatever. It depends on how good he is at it. Creasey's art is death. He's about to paint his masterpiece.
When Creasy's friend Ray is sitting on the couch at the Agency for Federal Investigation and calls Creasy an artist of death, from a side shot he eats a piece of food, licks his fingers clean, and from the shot it is clear that he is holding nothing in his hand. However, on the next shot from the front, Ray is holding something in the same hand, points to it with the other hand, leans forward and throws it on a plate, then picks up a napkin and wipes off the fingers he had just licked clean in the shot before.
When Pita is doing her homework and notices Creasy smiling, they play a game to see who smiles first. This scene was completely improvised.