At the Governors Ball after the Oscars on Sunday evening, the writer-director Christopher Nolan and the producer Emma Thomas stepped off a raised dais after having their multiple Oscars engraved and were greeted by the party’s chef, Wolfgang Puck. In honor of the night’s biggest prizewinners, Puck was serving a selection of British food: Roast beef with Yorkshire pudding and fish and chips were presented to the couple, who were both delighted by a taste of home.Onstage at the ceremony, Thomas said she had dreamed her whole life about winning an Oscar. When Nolan was asked at the party if he had held the same dream, he exclaimed, “Absolutely.”The normally reserved Nolan said he had felt emotional up on that stage, even though he maintained his composure. “The people that know me know when I get emotional,” he said. “Just ask Emma.”Christopher Nolan with two of the seven statuettes awarded for “Oppenheimer” on Sunday.True to form, Thomas added, “If he didn’t leave right when he did he would have started ugly crying.”“And we will leave it there,” said Nolan, before he was whisked away to greet more well-wishers.America Ferrera was still vibrating from Ryan Gosling’s “I’m Just Ken” performance and Billie Eilish and her brother, Finneas O’Connell’s rendition of “What Was I Made For.” Both of those performances “were just simply stunning,” she said. “I think Ryan is so brilliant and really created something so unique and special with his performance.”Robert Downey Jr. with his best supporting actor Oscar, also for “Oppenheimer.”The Governors Ball, held at the Dolby Theater, is the official post-Oscars celebration.Simu Liu, who took part in the number, said: “It was an incredible, surreal moment to be onstage. And also, this came together extremely quickly.” When he got the call from the interlude’s choreographer, Mandy Moore, he said, he and his fellow performers Ncuti Gatwa, Scott Evans and Kingsley Ben-Adir hit the group chats, “and were like, ‘Oh my God, are you doing this? We have to do this.’”On the night, Liu added, “we were so nervous. Doing any sort of live TV is nerve-wracking, and then to do it in that room? There’s not many rooms that are more intimidating.”“There was such a moment of elation when we were done,” Liu said. “I think we pulled it off.”Da’vine Joy Randolph, left, who won for best supporting actress.The French director Justine Triet, with the Oscar for best original screenplay that she won with her husband, Arthur Harari.Anita Hill, for one, won’t forget the movie that inspired it anytime soon. Hill stopped Greta Gerwig on Gerwig’s way to find her husband, Noah Baumbach, to tell her how important “Barbie” was to her. Gerwig, embarrassed by the attention, said with a smile, “We are just making movies over here.”Yet Hill had more to say on the subject. “Clearly she has done an outstanding job and I hope that’ll be an indication to the industry to open up more opportunity to women and people of color,” she said, also mentioning the screenplay win for “American Fiction.” “There’s still not enough,” she said, “but I think this is an important time.”Sterling K. Brown, left, holds the statue that Cord Jefferson, right, won for best adapted screenplay.The party’s menu was overseen by the Austrian chef Wolfgang Puck.The four-time Academy Award nominee Willem Dafoe.The celebration on Sunday was the 65th edition of the Governors Ball.According to the Academy, 1,500 guests were invited.Eugene Lee Yang, who voiced one of the characters in “Nimona,” a best animated feature nominee.Winners and nominees in each category, as well as presenters and other participants in the ceremony, get invited to the party.Billie Eilish with the only Oscar for “Barbie”: best original song, awarded to Eilish and Finneas O’Connell for “What Was I Made For?”Cillian Murphy, left, who won best actor for his performance in “Oppenheimer.”Charlotte Kemp Muhl, at the after party.The Swedish composer Ludwig Goransson, left, who won best original score for “Oppenheimer.” More