Trivia: The slap Paulie gives Henry when he leaves prison was completely improvised. The surprised look on Ray Liotta's face is genuine.
Trivia: The movie shows that Henry Hill has two daughters, whereas, in real life, he has a son and a daughter, who are also in hiding from the mob and their father.
Trivia: Al Pacino was originally asked to play the role of Jimmy Conway but did not accept for fear of being typecast after portraying too many gangsters throughout his career. Ironically, later in 1990, he ended up playing a gangster, Big Boy Caprice, in "Dick Tracy."
Answer: He was expecting a crowded room full of friends congratulating him. Also it was common knowledge among the mafia that being walked into an empty room when you were due to be made meant you were about to be executed, so Tommy likely knew he'd met his end just moments before the shot.
William Bergquist