Tatum blurred the line between actor and psychopath so well that he even wound up injuring Ruffalo, who by his own admission was already intimidated by Tatum's size, and was given no reason to question his fear after Tatum destroyed a mirror with his face. During one scene in which their characters wrestle, Tatum attacked Ruffalo so fiercely that Ruffalo suffered a permanent neck injury. It is unclear whether this was payback for the eardrum thing, but the scary thing is that it probably had nothing to do with it.

That's a real gash, with 100 percent genuine Mickey Rourke blood pouring out all over the place. And according to Rourke, it really fucking hurt, to boot. Not only is his expression real, but we assume that he is looking off-screen directly into Aronofsky's eyes.

Fox Searchlight Pictures
"Who's the wrestler now, Darren? You idiot. Oh god, my head."

After the scene was over, the real wrestlers who had been hired for the film gave Rourke a standing ovation for treating their industry with respect -- a phrase which here means "a willingness to mutilate yourself for money."

And speaking of bodily fluids ...

And according to everyone involved, there was no tube of prop urine or CGI -- they straight-up had her piss on him. According to Kidman, "That was what Lee [Daniels] wanted ... I mean, I love Zac. He's such a great guy and let me just say I am glad it was him. I feel safe with Zac and hopefully he feels safe with me."

It was probably impossible for Zac Efron to have predicted his career trajectory -- that fewer than 10 years after exploding onto the scene as a Disney teen heartthrob, he would have an Oscar-winning actress pissing all over his chest. We imagine it was equally impossible for Kidman to predict that her post-Oscar career would eventually find her rinsing the nipples of a former child star with a steady stream of her own urine.

Millennium Films
"When they said I'd be showered in gold for this role, I though they meant awards ..."

The scene was not created through some movie magic. Scorsese hired a woman to have her head shorn completely on camera. The woman was Natasha Newman Thomas -- who was not an actress, but a hairstylist and costume designer who happened to be friends with DiCaprio.

Being a hairstylist, Thomas naturally had major reservations about having her hair chopped off for the sake of the longest frat comedy ever filmed, but she eventually agreed to it. Rehearsals were done with a wig, but when it came time to finally film the scene, they obviously only had one chance -- if someone had coughed at the wrong time, they would either have to wait a year for Thomas' hair to grow back or run quickly out onto the street and try to find another young woman willing to come inside and have her head shaved by the guy who gets his skull crushed in an acupuncture parlor in Final Destination 5.

Paramount Pictures
They wanted to try a Taxi Driver Mohawk, but couldn't risk it.

Luckily for the production, the scene went off without a hitch, and Scorsese captured the very real facial expressions of a woman trying not to have a panic attack as her hair is given the Bruce Willis Special.

One early scene called for an asylum orderly played by Ken Gibbel to beat the hell out of her, but the actor kept pulling his punches because he didn't want to really harm Hamilton. But his hesitation was not appreciated -- every time he flailed pathetically at Hamilton, she had to fall to her knees on the hard concrete, and the scene had to be reshot again and again, resulting in Hamilton enduring more painful knee drops than Dusty Rhodes. This understandably pissed her off, so she decided to make sure their next fight looked way more real.

In a later scene, Sarah Connor attacks Gibbel's character with a mop handle. According to director James Cameron, to achieve maximum authenticity, Hamilton opted to simply beat the shit out of him for real. With a wooden stick.

"Looks like I stuck it to the man!"
"Linda, please ... I'm in so much pain."

In fact, Hamilton was so dedicated to her role that she demanded that everything she did be as real as possible, evidently choosing to ignore the fact that she was playing a character in a movie about time-traveling robot assassins. In the sequence wherein she escapes the asylum (which, incidentally, is the same one in which she tattoos the almighty Jesus out of Gibbel with a mop handle), her character had to pick some locks. Rather than allow the director to fake those shots, Hamilton learned how to pick locks and jimmied open the doors in real time. The scene was so genuine that English censors requested that the distributor cut it from the movie because they didn't want to teach people how to commit felonies.

Which is why England will be the first to fall when the robots come.

In all honesty, it seems like they cast the wrong actor in the role of the Terminator.

Bill tweets and has analyzed an obscene amount of time travel movies. Adam Koski's short story is not as scary as Linda Hamilton, but it's at least as scary as Edward Furlong. Sean Jeffers is a member of the a capella group the SMC-Men. Shower Carolyn with accolades for her Wolf Of Wall Street performance on Twitter.

A lot of your favorite scenes are, in fact, not scripted. Like how Viggo Mortensen was just going H-A-M all over the LotR set. Or how the Vulcan Neck Pinch was originally supposed to be a punch in the face. See those and more in 6 Iconic Movie Scenes That Happened By Accident and 5 Classic Pop Culture Moments (Actors Made Up on the Fly).

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