The lack of a host did not scupper this year's Academy Awards, which had plenty of memorable moments on the night.

It was a night of unexpected wins which threw up some shocks, but also celebrated diversity.

We've rounded up some of the best moments at this year's Oscars ceremony below.

Chris Evans is a perfect gent as he lends an arm to Regina King

Captain America himself Chris Evans sprung into action after Regina King won the Best Supporting Actress Oscar (for her superb performance in If Beale Street Could Talk) and escorted her to the stage.

His chivalry did not go unnoticed.

Jamie Lee Curtis praised him by tweeting: "Hey @ChrisEvans you are a gentleman! #raisedwell."

Amy Adams congratulates Regina King's mum

Well this is pure class. After losing out to Regina King in the Supporting Actress category, Vice star Amy Adams got out of her seat to congratulate King's mother, giving her a hug and holding her hands. Just lovely.

Melissa McCarthy and Brian Tyree Henry steal the show

Adding a welcome dose of levity to the proceedings, Melissa McCarthy and Brian Tyree Henry went method as they took to the stage to announce the Costume Design winner in full regalia of their own, replete with scattered stuffed bunnies. 

Sidenote: Twitter has decided Melissa McCarthy should host next year's ceremony and we think you'd be hard pushed to find a better candidate.

Wayne and Garth make a cameo

This made us very nostalgic. Mike Meyers and Dana Carvey rightly received a rousing welcome when they took to the stage as their beloved Wayne's World characters. We'll have to rewatch that movie ASAP.

Spike Lee delivers the speech of the night

Spike Lee is finally an Oscar winner! When it was announced the BlackKklansman director had won the prize for Adapted Screenplay, he was so excited he leapt into Samuel L Jackson's arms. We wish all Oscar winners showed that level of unbridled joy.

And, of course, he went on to deliver a rousing speech.

He opened it by joking: "Do not turn that motherf****** clock on", then said: "We all connect with the ancestors who have love, wisdom and humanity.

"The 2020 presidential election is around the corner, let's all mobilise, let's all be on the right side of history, make the moral choice between love versus hate."

Lady Gaga and Bradley Cooper get romantic as they perform Shallow

Lady Gaga and Bradley Cooper got a double-standing ovation for their performance of Best Original Song winner Shallow from A Star Is Born.

The very earnest and intimate performance saw them channelling their characters Ally and Jackson by staring into each other's eyes.

It was either very cute or very cringe, depending on your perspective.

Rami Malek is a big ol' romantic

Cute! Rami Malek gave his partner and Bohemian Rhapsody co-star Lucy Boynton a long kiss after being announced as Best Actor. He began his speech in a self-deprecating manner, saying: "I may not have been the obvious choice but I guess it worked out."

The actor went on to thank Boynton, adding: "Lucy you are the heart of this film.

"You are beyond immensely talented, you have captured my heart, thank you so much".

Olivia Colman wins hearts with her heartfelt acceptance speech

Olivia Colman's speech after her unexpected Best Actress win for The Favourite ahead of the widely-tipped Glenn Close was so real and heartfelt and emotional you couldn't help but fall in love with her.

With tears in her eyes, she addressed her fellow nominees, saying: "To be in this category with these extraordinary women, and Glenn Close... you've been my idol for so long and this is not how I wanted it to be and I think you're amazing and I love you very much."

The actress added: "And any little girl who is practising their speech on the telly, you never know. I used to work as a cleaner and I loved that job, I did spend quite a lot of my time imagining this."

Jason Momoa's perfectly coordinated scrunchie

Let's get real, Aquaman star Jason Momoa pretty much melts hearts whatever he does, but he might have outdone himself here.

The actor caused a tizzy when he took to the stage (alongside a radiant Helen Mirren) sporting a blush pink scrunchie that perfectly matched his slick suit. You can't help but admire the coordination. 

Check out the winners at this year's Oscars here, and take a look at our red carpet gallery here.

The Oscars are on RTÉ2 on Monday night from 9:30pm - and the speeches are limited to 90 seconds.