Here are the top five takeaways from the big night:
The host had the room laughing with his poignant, yet hilarious opening monologue. It wasn’t too much and really focused on the diversity issue from an angle only he could tackle.
“You realize if they nominated hosts, I wouldn't even get this job, you'd all be watching Neil Patrick Harris right now,” he joked early on.
No one was safe, not even Will Smith.
"It's not fair Will was this good and didn't get nominated [for "Concussion"]. It's also not fair Will was paid $20 million for 'Wild Wild West,'" he said.
He also sold Girl Scout cookies during the show, and who doesn’t love Girl Scout cookies?
This was the punchline that lasted the entire night.
Kevin Hart took the stage later in the night and gave a very emotional speech. "Let's not let this negative issue of diversity beat us," Hart said, a perfect compliment to Rock.
The important topic was handled with humor during the show.
'Mad Max' and 'Spotlight'
The epic George Miller classic "Mad Max: Fury Road" cleaned up at the Oscars. The movie had a three-peat at one point, winning three awards in a row, then continued its run, finishing with six Oscars.
Later on in the night, Louis C.K. even joked that they won in a category in which they weren’t even nominated.
“No abused woman or man ... ever has to ask themselves 'What did I do?' They did nothing wrong,” he said.
Gaga then sang “Til It Happens To You” while seated at a piano, and was later joined by fellow sexual assault survivors.
Leo’s Big Night
Leonardo DiCaprio finally took home his first Oscar for "The Revenant" and walked up to the stage with a big, well-earned grin on his face.
“I do not take this night for granted,” he said at the end of his speech after thanking his director and co-star. He then thanked those who have supported him his whole life.
"To my parents, none of this would be possible without you," he said.
The Internet exploded in support for the actor who has been thrilling audiences for 25 years.