The Academy voters this year decided to scatter their love by awarding different films though George Miller's "Mad Max: Fury Road" swept in technical categories with six wins in editing, production design, sound editing, sound mixing, costume and makeup & hairstyle.
"Spotlight", directed by Tom McCarthy, went home with the top award and best original screenplay trophy for Josh Singer and McCarthy.
DiCaprio, who many considered was long overdue for Oscar, predictably won the best actor trophy for "The Revenant" and took the opportunity to highlight climate issue.
"...Climate change is real. It is happening right now. It is the most urgent threat facing our entire species, and we need to work collectively together and stop procrastinating... Let us not take this planet for granted. I do not take tonight for granted," DiCaprio, 41, said in lengthy speech.
"I am very lucky to be here tonight but unfortunately, many others haven't had the same luck...
"So what a great opportunity to our generation to really liberate ourselves from all prejudice and this tribal thinking, and make sure for once and forever that the color of the skin become as irrelevant as the length of our hair."
Brie Larson, a front-runner in the best actress category, bagged the trophy for her poignant portrayal of a woman trapped in a garden shade for years in "Room".
"I want to start big because the thing that I love about moviemaking is how many people it takes to make it," she said as she rushed through an extensive list of 'thank yous'.
Best supporting actress and actor trophies went to Alicia Vikander for "The Danish Girl" and British actor Mark Rylance for his role of a KGB spy in Cold War drama "Bridge of Spies"
"Is Hollywood racist? You know, you have to go at that the right way. It is a different type of racist. You are damn right Hollywood's racist. Hollywood is sorority racist. But things are changing," the host said.
