At 16 minutes in, when Bradley Brinkman is introduced to Skeet Mecklenberg, look for Brad Pitt as an extra seated in a beach chair behind Skeet. He's in blue and white striped shorts seated next to a blonde girl in a white, string bikini.
At one point the devil says that Labor Day is Hitler's Birthday. Labor Day is celebrated on the first Monday in September and Hitler's birthday is April 20th - but then it was the Devil who said it, so maybe he was lying.