Trivia: The spears shown in the lab are from Predator 2 and Alien vs Predator.
Trivia: When Rory is walking down the street wearing the Predator mask, there is a bright red/orange alien walking toward him. This is a nod to the original Predator costume that looked like a big bug, the red/orange color was used to film the stealth camouflage scenes. The bug suit was scrapped after a few test shots proved how silly it looked. Jean-Claude Van Damme was in the original costume, but he was let go when the costume was scrapped. (00:45:20)
Trivia: Gary Busey, who played Peter Keyes in Predator 2, is the father of Jake Busey, who plays a doctor in this film.
Trivia: Spoilers. Originally, Shane Black wanted Arnold Schwarzenegger to make a cameo in the end - he would have been the "Predator Killer" that rises from the device right before the credits. When he decided not to return, the "Predator Killer" was changed into a highly advanced suit of armor.
Trivia: The line on the poster "You'll never see him coming" was used by The Mandarin from Iron Man 3, also directed by Shane Black.
Suggested correction: I agree this APPEARS to be correct, but I think it is questionable - it COULD be the left arm. The covered thumbs-up arm the Predator extended to the driver had its fingers curled toward the palm, not straight out like they were. There was a zigzag pattern on the glove's wrist, but this could be the opposite (outer) side if it also had the pattern, not the inner side. The thumb looked broken - giving the image that it might have been the right thumb, but actually the left. You MIGHT be right.
KeyZOid
The mistake is valid, no correction needed. It's a right hand that extends through the opening and a left arm seen on the floor. A key factor is the knuckles location, so it doesn't matter if the thumb looked broken.
Bishop73
I watched several times and still believe it could be the left hand. The way the fingers are folded (curled) toward the palm, they look like left knuckles.
KeyZOid
If the hand was a left hand, then you wouldn't see the knuckles.
Bishop73
No matter which way fingers are folded under toward the palm, there will be knuckles showing on either side. (Make a fist and see for yourself!) No further replies from me here.
KeyZOid
Then you misunderstand what I mean by knuckles. I'm talking about the metacarpophalangeal joint, not the interphalangeal joint.
Bishop73
No, I didn't... and knuckles are knuckles! [Now, no additional replies from me here.].
KeyZOid