Continuity mistake: The amount of urine (apple juice) that Austin hands to the doctor seems to vary up and down between shots as he's spilling it all over.
Continuity mistake: The box of chocolate in front of Scotty keeps moves closer and farther away from him from shot to shot.
Continuity mistake: When we first arrive at the club in 1975, the 3 women are singing on stage. The woman's mic stand on the right has the wires all neatly hidden however when we have the shot from behind the stage the wire on her mic he hanging off freely to the side.
Revealing mistake: When the Shaguar does a burnout to head towards the Apache Helicopter, we see the burnout from a previous take in front of the tire.
Revealing mistake: When Austin is ejected from the Shaguar to fly over the Apache helicopter, we can see its a dummy being ejected from the front shot of the car.
Continuity mistake: When they are behind the Hollywood sign in the beginning of the movie, Number 2's Starbucks cup logo on the holder keeps facing different directions from shot to shot even though he's not touching it.
Revealing mistake: When Austin is looking at the 3 sailors who were to guard his father, there is only 1 golden source of light seen reflected in his glasses, not 3 as there should be.
Continuity mistake: When the Shaguar is driving towards the helicopter, before Austin ejects the seat, the car is very close to the helicopter, but in a wider shot it keeps the distance, despite both moving really fast.
Continuity mistake: Austin is flying over the middle part of the helicopter and firing at it. When the angle changes and the helicopter explodes, he's nowhere to be seen.
Other mistake: Right as Austin performs "Daddy Wasn't There", the camera moves in on the band and people move out of its way. One of the extras on the left side quickly looks right at the camera and realises she needs to move.
Revealing mistake: In the fighting scene with Austin and Mini-Me it is very obvious that a puppet supposed to be Mini-Me is smashed to the door of the minibar.
Answer: The footage of Michael Caine is from the 1967 film Hurry Sundown.
David Mercier