For all of the attention that Hollywood stars get, there are plenty of people in the movie business who don't get enough credit.
Our favorite blockbusters couldn't be made without writers, producers, and even stuntmen.
In an age where digital effects are everywhere, sometime you just need a highly trained double to get hit by a car or fall off a building.
Looking the part isn't always a requirement, but a few of these stunt doubles are the spitting image of the famous person they're filling in for.
1. Brad Pitt
He's not exactly leading man material, but this stunt double has filled in for Hollywood's most famous divorced dad on a few of his film sets, including World War Z.
2. Reese Witherspoon
Witherspoon says her stunt double makes her look "tough," but the really tough part was finding someone to match her small stature.
The Big Little Lies star is only 5'1".
3. Michael Douglas
Can you tell which of these sharp-dressed men is the Ant Man star?
4. Ben Affleck
Hmmm, they look pretty close, but did Affleck's stuntman get a matching back tattoo?
5. Will Smith
You would never mistake him for Smith, but this stunt double's matching wardrobe is perfect.
6. Donnie Wahlberg
The Blue Bloods star gets into plenty of shootouts and fights, so of course he needs a stunt double.
7. Uma Thurman
8. Taylor Lautner
The Twilight star let his stuntman handle the rough stuff on the set of Tracers.
9. Amy Schumer
The comedian was #Twinning with her stuntwoman while filming I Feel Pretty.
10. Chris Evans
How do you think Captain America's stunt double measures up to the real thing?
11. Charlize Theron
Her stuntwoman looks tough, but Theron has proved that she's no wimp either.
12. Harrison Ford
The cheeky message on Ford's signed photo to his stuntman reads:
Vic - If you learn to talk I'm in deep trouble!
13. Bruce Willis
Bald? Check. Jacket? Check. Looks like we're ready to roll.
14. Emilia Clarke
Model and musician Rosie Mac is the Game of Thrones star's stunt double, and they're seriously hard to tell apart.
15. Quevenzhane Wallis
The Annie star's stunt double looks a little older than she is, but the makeup department matched their hair perfectly.
16. Dwayne Johnson
Where do you even find someone big enough to take The Rock's place? His own family, of course.
Ever since he starred in The Scorpion King, Johnson's cousin Tanoai Reed has done all of his stunts.
And the family resemblance is pretty strong.
17. Johnny Depp
Two Jack Sparrows? That sounds like a great idea for a new Pirates of the Caribbean movie.
18. Mark Wahlberg
Wait a minute, which one is the stuntman?!
19. Jennifer Lopez
Yes, for her "Follow The Leader" music video Lopez let a man strut his stuff in her place. Should we call him Johnny from the block?
20. Mark Ruffalo
The Avengers star and his double look pretty close. Do you think his curly hair is natural?
21. Chandler Riggs
The Walking Dead star's stunt double is actually a pint-sized lady named Emily Brobst. Bet you never even noticed!
22. Rebel Wilson
If there were two Wilsons, they would probably make a movie so funny no one could sit through it. Thankfully, this is just her stuntwoman.
23. Robert De Niro
Can you tell which of these two men is the Oscar-winner in this shot from the set of Bad Grandpa?
24. Kate Winslet
These two look pretty close in a photo from the set of Titanic. I just hope Winslet's stuntwoman didn't have to float in the icy water for real.
25. Ian McKellen
Instead of digital effects, The Lord of the Rings used old fashioned trickery to make the wizard Gandalf look taller than his hobbit companions, which explains McKellen's giant double.
26. Chris Hemsworth
The pair bulked up together on the set of Thor, and stuntman Bobby Holland Hanton revealed the job was tougher than it looks.
"Thor is definitely the most difficult character that we have to get in shape for," he explained.
"Chris is already huge, he’s much bigger than me naturally so I have to train twice a day. It’s a job in itself."
27. Tom Hardy
Hardy's stuntman on the set of Max Max: Fury Road was a dead ringer for the eccentric star.
28. Tom Cruise
Not exactly twins, are they? Cruise and his double for Knight and Day looked like... well, you can guess.
29. Rupert Grint
At least his hair matches the Harry Potter star. We're guessing they shot his scenes from pretty far away.
30. Patrick Dempsey
McDreamy and his sidekick, McDouble.
31. Chris Pratt
Now that Pratt and his wife Anna Faris have gone their separate ways, maybe Pratt's stuntman has a chance to win her heart?
Want more surprises? These 10 iconic roles were almost played by different actors.