His role as 'Father of the Atomic Bomb' J. Robert Oppenheimer already has fans calling for the Irishman to be awarded the Oscar for Best Actor.
And it is no surprise to hear either, with the Peaky Blinders star absolutely smashing his role as scientific genius yet difficult man in the Christopher Nolan epic.
A star in Hollywood for over a decade, the 47-year-old actor has seen his stock rise year on year and now proudly stands as one of tinsel-town's leading actors. But what are rated as his best films ever - and where does Oppenheimer rank in that?
We looked at Rotten Tomatoes to discover what Cillian Murphy films are rated as the best of all time.
5. The Wind That Shakes the Barley - 90%
Playing the role of Damien, Murphy's role in the film was praised highly and was set during the Irish War of Independence in the early 1920s. | Getty Images for Universal Pictu
6. 28 Days Later - 87%
Murphy first rose to prominence when he played a zombie apocalypse survivor in Danny Boyle's much heralded horror 28 Days Later. | Getty Images
7. Inception - 87%
He took on the role as Robert Fischer, Jr. in the Christopher Nolan epic saw his reputation rise. | Getty Images
8. The Party - 82%
In the black-political comedy, Murphy stars as a friend of main character Janet, who hosts a party to celebrate her political ascension. | Getty Images