Man, Michael J. Fox really pulls off that "I was just nearly hanged" look and voice at the end, doesn't he? Well, this was somewhat aided by the fact that he was seriously nearly hanged while shooting this scene. Most of the "Marty's almost killed" shots in this movie were done with a stuntman, but obviously they needed to show the actor's face at some point or people would ask for their money back, so for this sequence they had Fox stand on top of a box and put a noose around his neck.

Universal Pictures They tried a close-up of his face, but it looked like he was masturbating.

However, director Robert Zemeckis just could not get this to look realistic, so Fox offered to do it without the box, relying entirely on careful hand placement on the noose to keep himself from asphyxiating. This worked for a few takes, but on the third one, Fox missed his hand placement and was really strung up by his neck, like a common pig burglar.

Universal Pictures Fortunately, Zemeckis still had Eric Stoltz on speed dial in case they needed another Marty.

Fox actually passed out and hanged there for a moment until someone noticed that the movie's star was dying in front of everyone and took him down. Here's how Fox himself put it in his autobiography Lucky Man:

This was the shot that they ultimately used, which made for an impressive albeit a little too realistic scene. But hey, it's not like the director intentionally strangled an actor until he lost consciousness. Who would even do that?

However, Quentin Tarantino was unimpressed with choking scenes in other movies, in that actors are rarely in any considerable danger while shooting them, and convinced Kruger to be strangled for real in order to get the scene just right. Fearing that actor Christoph Waltz would choke her too much or too little, Tarantino decided to take matters into his own hands. Literally, his own hands.

The Weinstein Company "Trust me, I've strangled at least 30 hobos. I got this."

In this interview, Tarantino tells us, "What I said to her was, I'm gonna just strangle you, alright? Full on, I'm gonna cut off your air, for just a little bit of time. We're gonna see the reaction in your face and I'm gonna yell cut." Kruger went "Yep, that sounds like a reasonable thing a director would ask of me" and let Tarantino sit on top of her and choke her to the point of unconsciousness.

The Weinstein Company

While wearing a Nazi outfit.

The Weinstein Company "Well, I wasn't prepared for this, but ..." *Tarantino tears his suit and this is underneath*

OK, at this point we seriously have to question if Tarantino wrote this entire movie to justify choking a beautiful woman while dressed as a Nazi, because the entire budget was probably still cheaper than hiring one of those high-end Hollywood hookers. Fortunately for Kruger, they got the shot in one take and that's the one that appears in the movie. Tarantino then reportedly gave the crew 15 minutes and had to take a long bathroom break.

That last part, where Lee's kick propels the other actor like the stream of an anti-riot van, dispersing the crowd behind? That wasn't in the script, unless you count the script Lee apparently had in his mind to get revenge on the dude.

You see, earlier in the fight between Lee and Wall, there was a part where real bottles were used. While filming the scene, Wall smashed two bottles together and slashed at Lee, accidentally cutting his arm.

Warner Bros. Pictures A move that failed to impress Mr. Yellow.

After Lee's arm healed and he went back to reshoot the scene, rumors started going around the set that he was planning to kill Wall for real. Clearly, he wasn't; he simply wanted to cripple him. So for the part where he was supposed to take out Wall with a kick, Lee gave it some extra oomph and sent the guy flying into the extras behind -- Wall landed with such strength that when one of the extras tried to catch him, he actually broke his arm.

Warner Bros. Pictures If you watch frame by frame, you can see that Wall actually goes around the world and comes back.

That's right: Bruce Lee once kicked that dude so hard, he broke another person's bones. Now, Wall still insists that he and Lee were good friends and that the death plot rumors were started by the director, but that only makes us fear Bruce Lee even more -- this is how he kicks someone he doesn't want dead.

There are many hints that what you're seeing isn't real, like the aforementioned rug on Carell's chest (probably an unused Chewbacca suit from Star Wars), or the fact that the waxing lady apparently attempts to wax his nipple right off without taking any precautions (surely a professional wouldn't do that). Also, that amount of pain would probably be worth it if you're doing, like, an intense art film with Kubrick deep in the jungle, but not for a three-minute sequence in some dumb, largely improvised comedy.

Universal Pictures Which would explain why they used a "serious emoticon" on his torso.

But nope: The waxing is completely real, as is the pain -- director Judd Apatow and Carell himself decided it would be fun to do an actual chest waxing and film that s**t. They put four cameras around Carell, since he couldn't re-grow his hair if they needed to repeat any shots, and captured every second of his delicious suffering.

Universal Pictures Seth Rogen and Paul Rudd's barely concealed arousal was also not acting.

In the behind-the-scenes video, you can see Carell jokingly saying he doesn't think the scene is gonna hurt, and later confirming that it totally f*****g did. A lot. So, yeah, that's Carell's real hair (or was before they tore it off), and as for the nipple ... well, apparently the waxing lady didn't have so much experience removing hair from that particular part of the anatomy. There's an interview where Carell says you can actually see blood in some of the shots.

You've probably guessed by now that this wasn't CGI, or a rubber model, or Warwick Davis in a squid suit or anything -- that's a real, live, squirming squid that the actor Choi Min-sik ate, and what makes it even worse in his case is that Choi is actually a Buddhist and devout vegetarian in real life. Before the scene, he even told the squid he was sorry ... and apparently the little guy forgave him, because look, in this part it's totally trying to hug him:

Show East Awwwww. Ewwwww.

Swallowing even a dead animal would have been disgusting enough for the actor, let alone one that you can feel fighting you as it goes down your throat. On top of that, he had to do it twice, once for the camera rehearsal and then again for the actual shooting. So you could say that, yes, this guy definitely is acting (you can tell because he's not screaming through the whole thing), but in a sense he isn't, since he's performing the actual bodily function of eating a live squid. We're gonna go ahead and say that counts.

The craziest part is that Stallone actually did that jump three times before he decided his insides hurt just enough to call it a success. Then there was the scene where Rambo gets smacked in the back by a cop and collapses -- that one took 19 freaking takes, and according to a crew member, "Sly was black and blue by the time it was over." We'll remind you now that Stallone wrote this movie and was the one insisting that the cast and crew inflict real pain upon his body.

Orion Pictures Stallone ended up fine, but the cop has traumatic flashbacks to this day.

But this was when Stallone was still an eager young actor trying to make an impression in Hollywood; by now his movies are probably all full of boring stuff like CGI, stunt doubles, and "safety regulations," right? Apparently not: While shooting a fight scene with Stone Cold Steve Austin in The Expendables, Sly kept pushing Austin to hit him harder and harder until the guy threw him against a wall and broke his freaking neck. Stallone ended up requiring surgery and metal plates to fix the damage. This despite the fact that, as a former wrestler, Austin is specifically trained to look like he's beating you while not actually doing s**t -- he has said he "takes a lot of pride in not hurting people."

Geez, no wonder Stallone has been calling Bruce Willis lazy -- he probably found out Willis just pretended to jump out of an exploding building in Die Hard, like some sort of p***y.

Matthew's Twitter can be found here. Aaron has a movie-based blog where he talks about Nicolas Cage. A lot. You can read more from Amanda at Mannafesto or follow her on Twitter. Davidb is a terrible playwright for The Contemporary Theater Company. Miles DuBonnet sometimes does stand-up comedy and sometimes plays kooky characters!

Related Reading: Actors don't need to do their job to do their job. For further proof, check out this additional collection of incredible performances that weren't acted at all. You know the first Alien chestbursting scene? All those shocked reactions to it were genuine. With directorial trickery so rampant, it's no wonder Wesley Snipes tried to strangle the director of Blade 3. Before we spend too much time talking about how creative Hollywood can be, let's take a moment to remember the actors who look identical on every poster they do.