The Irishman. This movie covers the Irishman who confessed he killed the head of the Teamsters, Jimmy Hoffa. Still, many people argue that he didn't kill Jimmy, and other people of interest are under suspicion. It's definitely not a gangster movie, it's more one that shows that life is nothing but vain. Directed by Martin Scorsese!! Staring Al Pacino, Robert De Niro and Joe Pecci. Great work!