Gary Oldman told his 98-year-old mother “put the kettle on – I’m bringing Oscar home” as his portrayal of Winston Churchill earned him his first Oscar.
Disgraced mogul Weinstein has been accused of sexual harassment and assault by scores of actresses. He denies all allegations of non-consensual sex.
Sam Rockwell, Jane Fonda, Patrick Stewart and Steven Spielberg were among the attendees to sport Time’s Up pins on their evening wear.
Warren Beatty and Faye Dunaway returned to the Oscars stage to present the final award of the night a year after the best picture fiasco when they mistakenly announced La La Land as the winner rather than Moonlight.
Oldman appeared emotional as he accepted his award and in a lengthy speech, he thanked “the Academy and its members for this glorious prize” as well as his colleagues, his wife and family.
He thanked America “for the many wonderful gifts it has given me – my home, my livelihood, my family and now Oscar.”
He said: “I would like to thank my mother, who is older than the Oscars, she is 99 years young next birthday and she’s watching the ceremony from the comfort of her sofa.
“I say to my mother, thank you for your love and support, put the kettle on – I’m bringing Oscar home.”
McDormand gave an energetic speech as she collected her prize, in which she encouraged all the female nominees from the night to stand up with her.
She said: “Meryl (Streep), if you do it, everyone else will.”
McDormand continued: “Look around ladies and gentlemen, because we all have stories to tell and projects we need financed.
“Don’t talk to us about it at the parties tonight, invite us into your office, we’ll tell you all about them.
“I have two words to leave you with tonight – inclusion rider.”
He said: “The Academy, as you are no doubt aware, took action last year to expel Harvey Weinstein from their ranks.
“There were a lot of great nominees but Harvey deserved it the most.”
He added: “What happened with Harvey and what is happening all over was long overdue.
“We can’t let bad behaviour slide anymore, the world is watching us and we need to set an example and the truth is if we are successful and if we can work together to stop sexual harassment in the workplace, if we can do that, women will only have to deal with harassment all the time at every other place they go.”
Kimmel also used his opener to encourage winners to keep their speeches short, promising a jetski to the recipient with the briskest running time.