Gary Oldman Nails Robert De Niro, Christopher Walken Impersonations (Video)

Actor also talks about how long it took for him to transform into Winston Churchill in “Darkest Hour”

Gary Oldman is not only good at channeling Winston Churchill in his new movie, “Darkest Hour,” but he’s also really good at impersonations.

During his appearance on “The Tonight Show,” host Jimmy Fallon told the actor that he had heard of Oldman’s secret talent.

“I just do them to amuse myself,” Oldman told Fallon. “I don’t need an audience.”

He explained that he once drove by Home Depot, which inspired him to do an impression of Robert De Niro, including the facial expressions. At other times, he has to wake up his 20-year-old son and he’ll do so as Christopher Walken or Al Pacino.

He later explained how long it took for him to turn into Winston Churchill in “Darkest Hour,” which hits theaters on Nov. 22. Oldman explained that it took three hours and 15 minutes for the face and the wig to be put on him, and with the padding, it was just a little under 4 hours of getting ready time. Then, Oldman had to work a 12-hour day before it would take him an hour to take all the prosthetics off.

“Darkest Hour” was directed by Joe Wright and also stars Lily James, Kristin Scott Thomas, Ben Mendelsohn and Stephen Dillane. It is set during the early days of World War II, when the fate of Western Europe hung on the newly-appointed British Prime Minister Winston Churchill, who had to decide whether to negotiate with Hitler, or fight on against incredible odds.

Watch the video above.