"Oppenheimer" swept the board on Sunday at the Oscars, Hollywood's biggest night of the year, with seven awards including best picture and best director, crowning a triumphant year for filmmaker Christopher Nolan.

Nolan's masterful drama about the father of the atomic bomb, half of last summer's massive "Barbenheimer" phenomenon, also bagged acting prizes for lead Cillian Murphy and supporting actor Robert Downey Jr.

Nolan -- a British-American filmmaker hailed as a generational talent -- said that film as an art form still has room to grow.

Here are the winners in key categories for the 96th Academy Awards:

Best picture: "Oppenheimer"

Best director: Christopher Nolan, "Oppenheimer"

Best actor: Cillian Murphy, "Oppenheimer"

Best actress: Emma Stone, "Poor Things"

Best supporting actor: Robert Downey Jr, "Oppenheimer"

Best supporting actress: Da'Vine Joy Randolph, "The Holdovers"

Best original screenplay: Justine Triet and Arthur Harari, "Anatomy of a Fall"

Best adapted screenplay: Cord Jefferson, "American Fiction"

Best international feature film: "The Zone of Interest" (United Kingdom)

Best animated feature: "The Boy and the Heron"

Best documentary feature: "20 Days in Mariupol"

Best original score: Ludwig Goransson, "Oppenheimer"

Best original song: Billie Eilish and Finneas O'Connell, "What Was I Made For?" from the "Barbie" soundtrack

Best cinematography: Hoyte van Hoytema, "Oppenheimer"

Best film editing: Jennifer Lame, "Oppenheimer"

Best makeup and hairstyling: "Poor Things"

Best costume design: "Poor Things"

Best production design: "Poor Things"

Best sound: "The Zone of Interest"

Best visual effects: "Godzilla Minus One"