After months of primping, preening and attempting to deal with uproar over the lack of diversity among Oscar nominees – again – awards season is officially over in Hollywood.

The world can now rest easy knowing that Leo finally has his Academy Award, and also that he holds no grudges against Rose for letting him sink into the sea (even though they both could have fit on her raft.)

Actors Leonardo DiCaprio and Kate Winslet delighted Titanic fans by posing together on the red carpet ahead of this year's Oscars ceremony, sparking a #TitanicReunion hashtag despite the fact that they weren't actually reuniting.

Many on Twitter encouraged the longtime friends to "never let go" as they shared pictures of their characters, Jack and Rose, from James Cameron's 1997 film.

What really choked viewers up, however, was the shot of Winslet's joyful reaction when DiCaprio won his first-ever Oscar for best actor in The Revenant.

Here are four more of the most buzzed-about and memorable moments from 2016 Academy Awards ceremony:

Chris Rock's fierce monologue

Second-time Oscars host Chris Rock pulled no punches in his opening monologue, choosing to address the #OscarsSoWhite controversy head on with his first line – and almost every line after that.

"Man, I counted at least 15 black people on that montage," he started. "I'm here at the Academy Awards, otherwise known as the White People's Choice Awards. You realize, if they nominated hosts, I wouldn't even get this job."

Serious as the subtext might have been, Rock brought plenty of levity and laughter to the room through his signature sense of humour. 

"Jada boycotting the Oscars is like me boycotting Rihanna's panties. I wasn't invited," said the 51-year-old comedian, referring to actress Jada Pinkett Smith. "But I understand, I'm not hating. I understand you mad. Jada's mad her man Will was not nominated for Concussion... it's not fair that Will was this good and didn't get nominated. Yeah, you're right. It's also not fair that Will was paid $20 million for Wild Wild West. OK?"

The speech was a hit among audience members, both at home and in the Dolby Theatre in Los Angeles on Sunday night.

Jacob Tremblay geeking out over Star Wars droids

This year's Oscars broadcast taught us that even the most charming and composed children can be tempted to jump out of their seats when robots enter the room.

Nine-year-old Canadian actor Jacob Tremblay, who starred in best picture-nominated Room, was adorably stoked when BB-8, R2-D2, and C-3PO from Star Wars rolled on stage as part of a tribute to legendary composer John Williams.

The noted Star Wars fan was spotted craning his neck around taller audience members to get a better look at the droids in action, coaxing a collective "awww" out of viewers at home.

The young actor also got some attention online ahead of Sunday's show for posting a photo of his "hot" parents on Instagram. They don't seem to mind.

Stacey Dash's inadvertent self-burn

In what must be one of the most cringeworthy moments in recent Oscars history, 90's actress-turned-Fox News contributor Stacey Dash made herself the butt of Rock's joke – simply by showing up.

Dash, who just last month said that Black History Month shouldn't exist and called the #OscarsSoWhite boycott "ludicrous," has been criticized in recent years for her various comments about black communities in America.

Thus, it was a downright shock to many when Rock brought her out on stage following his monologue.

"The academy has taken steps to fix this problem and that is why it is my honour to introduce the director of our new minority outreach program," said Rock to the audience. "Please welcome, Ms. Stacey Dash!"

The crowd fell almost silent as a smiling Dash said, "I cannot wait to help my people out. Happy Black History Month!"

A single clap was heard echoing throughout the auditorium.

Dash seemed to be in on the joke, writing in a blog post, "I'm sure many black people rolled their eyes," when she walked on stage, and reaffirming that she's not a "cookie cutter black."

U.S. Vice-President Joe Biden speaks out against sexual assault 

Biden received a standing ovation from Hollywood's heavyweights as he walked onstage to the John Williams-composed theme song from Raiders of the Lost Ark.

"I'm the least qualified man here tonight," he started. "Despite significant progress over the last few years, too many woman and men on and off college campuses are still victims of sexual abuse."

Biden went on to introduce Lady Gaga's performance of Best Original Song nominee Til It Happens To You from the documentary The Hunting Ground

But first, he asked "millions of Americans including me, President Obama, the thousands of students I've met on college campuses and the artists here tonight" to join him in pledging to "change the culture."

"A pledge that says – I will intervene in situations when consent cannot or has not been given. Let's change the culture. We must and we can change the culture. So that no abused woman or man, like the survivors you will see tonight, ever feel they ever have to ask themselves 'what did i do?' They did nothing wrong. I really mean this, take the pledge. Visit"