1. The Godfather Part II (1974): De Niro plays a young Vito Corleone, while Pacino reprises his role as Michael Corleone. This movie is considered a classic and earned De Niro an Academy Award for Best Supporting Actor.
2. Heat (1995): This crime thriller pits De Niro's experienced, meticulous thief against Pacino's relentless detective. It's a memorable performance from both actors.
3. Righteous Kill (2008): While not critically acclaimed, this action film features De Niro and Pacino as NYPD detectives investigating a series of vigilante killings.
There is also a fourth film, The Irishman (2019), which features both actors as older versions of their characters. However, they do not have any scenes together in the movie.