YouTube | LadyGagaVEVO

10+ Celebrities Fans Didn't Realize Are In Music Videos

While music videos aren't watched nearly as much as they used to, it's still fun to go back and watch our favorite ones.

When you do, you might notice something that you missed the first time: all the celebrities.

While many are blink-and-you-might-miss-it cameos, some celebs have full-on roles.

Here are 10+ celebrities fans didn't realize are in music videos.

Keanu Reeves

YouTube | Retro Plus

Here's yet another reason to love Keanu: he starred in a Paula Abdul video in 1991 for "Rush Rush."

Word has it that when Paula went to introduce herself to him, he was playing air guitar in his underwear...

Megan Fox

YouTube | EminemMusic

At the height of her fame, the actress starred in the very intense video for Rihanna and Eminem's collaboration, "Love the Way You Lie."

In it, she played a woman in an abusive relationship, while Dominic Monaghan played her husband.

Channing Tatum

YouTube | Ricky Martin

His former career as a stripper isn't the only topless work the actor did.

When he was 20, he appeared as a topless bartender for the "She Bangs" Ricky Martin video.

He spent five days filming and only earned $400.

Issa Rae, Tessa Thompson, Tiffany Haddish, and Lakeith Stanfield

YouTube | Jay-Z

For those who have been asking for a more diverse Friends cast for years, Jay-Z has your back.

In 2017, he delivered this all-star video for his song "Moonlight."

It's definitely worth the watch, so give it a go!

Zendaya

YouTube | Beyoncé

The Spider-Man: Homecoming actress can die happy now that she got to star in a Beyoncé video for "All Night."

Sister singing duo, Chloe x Halle, were also in the video. Halle is set to star in the live-action remake of The Little Mermaid.

Ashley Graham

YouTube | DNCEVEVO

Back when Joe was a part of the group DNCE, he made a steamy music video with the supermodel, Ashley Graham.

In it, the pair played a couple who are ready to take things to the next level, and it is amazing.

Justin Bieber and Tom Hanks

We never thought we'd write this sentence, but Tom Hanks and Justin Bieber once danced in the street together.

This took place in Carly Rae Jepsen's video for "I Really Like You." It's worth the watch!

Rupert Grint

YouTube | Ed Sheeran

There's a lot of Ed Sheeran lookalikes in the world, but the best one yet was the Harry Potter actor starring as Ed in his music video for "Lego House."

In it, he actually played a pretty creepy stalker.

Joe Jonas and Jake Gyllenhaal

What's better than one Hollywood heartthrob? Obviously two! It's the only way to get anything done.

This is what made the "Giving Up The Gun" music video from the Vampire Weekend so perfect since they had both actors in it and playing tennis.

Courteney Cox

YouTube | Bruce Springsteen

Before she was Monica Gellar on Friends, Cox was an adoring fan in a Bruce Springsteen music video.

This was for the 1984 song, "Dancing in the Dark." She even got to go up on stage with Bruce and dance!

Matt LeBlanc

Courteney's not the only Friends star to star in a music video.

Matt LeBlanc was one of the many celebrities to take part in "Into the Great Wide Open" by Tom Petty.

He was joined by Faye Dunaway and Johnny Depp, among others.

Melissa Joan Hart and Adrian Grenier

YouTube | Britney Spears

They were both actors on very successful shows: Sabrina the Teenage Witch and Entourage, but their biggest claim to fame is definitely starring in a Britney Spears video.

This was for the song "You Drive Me Crazy," where Hart played a waitress and Grenier a bartender.

Scott Eastwood

YouTube | Taylor Swift

You may know him as Luke Collins from The Longest Ride or simply as Clint Eastwood's son.

But he also starred as the hunky movie star in Taylor Swift's music video for "Wildest Dreams".

Milo Ventimiglia

The actor captures hearts in every role he's in.

He did it in Gilmore Girls, in This Is Us, and he also did it in Fergie's music video for "Big Girl's Don't Cry."

Such an iconic song, and an iconic actor to top it off.

Jennifer Lopez

It's crazy to think of JLo as being unknown, but that's pretty much what she was when she was a backup dancer in "That's the Way Love Goes" music video for Janet Jackson.

But it actually happened, believe it or not!

Chris Evans

YouTube | Wasja

This one's pretty meta and most people completely forgot about it.

For his "Tainted Love" music video, Marilyn Manson had a few of the actors from Not Another Teen Movie appear in it.

It was soo adorable seeing a young Chris Evans.

Norman Reedus

YouTube | LadyGagaVEVO

The Walking Dead actor got to be in Lady Gaga's music video for "Judas" — no audition needed.

"I was in LA doing a movie and had the weekend off, and my manager had been talking to Gaga," he said.

"She asked if I wanted to do the video so I said, ‘[expletive] yeah, that should be fun!’"

Eva Mendes

YouTube | WillSmithVevo

If you thought the rom-com, Hitch, was the first time Eva Mendes and Will Smith worked together, think again.

Back when Will had a booming music career, Eva starred in his video for the song, "Miami". It was meant to be all along.

Kim Kardashian

YouTube | Fall Out Boy

While the reality star was still making her way up the stardom ladder, she starred in a music video for Fall Out Boy's song, "Thnks fr th Mmrs."

While she made out with Pete Wentz in it, she ended up with one of the chimps instead. Go figure.