Robert in "Heat" (2,4)

I believe the answer is:

de niro

(Other definitions for de niro that I've seen before include "Robert ... (''you talkin' to me?'')" , "Robert . . . . . ., film star of ''Taxi Driver'' and ''Raging Bull''" , "Robert -, Oscar-winning US actor" , "Actor who plays mainly tough characters" , "American actor, b. 1943" .)

I've seen this clue in The New York Times.

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