* The Godfather: Part II (1974): This is arguably their most famous collaboration. De Niro plays a young Vito Corleone and Pacino plays Michael Corleone.
* Heat (1995): This crime thriller sees De Niro and Pacino playing opposing characters: De Niro is a master thief and Pacino is a determined police detective.
* Righteous Kill (2008): De Niro and Pacino play veteran NYPD detectives investigating a series of murders.
There are also smaller roles in films like The Irishman (2019) and 8 Heads in a Duffel Bag (1997).
Let me know if you want more details about any of these films or are curious about others they've been in together!