The pilot reaches John Valentine as soon as he screams.
In the airplane, the window shade in the seat next to the main character repeatedly opens and closes between shots.
In the second segment, while the old men are watching the Jeopardy episode, the female contestant gives a correct answer to a $50 question. Her score increases from $90 to $140, however the host says "Correct for $500", adding an extra $450 to her total while the numbers displayed don't match up.
In Segment #2, when Leo Conroy (played by Bill Quinn) is standing outside saying goodbye to his family, he is seen from behind, holding two suitcases. On the sidewalk, near the arch, there is an object, possibly a can. After his family leaves, there is another shot of him from behind, but the object has disappeared.
Bill Connor's position at the table changes several times in between shots.
An exterior shot of the airplane in Segment #4 shows the landing gear to be in the down position. The pilot later comments that the plane would be landing in twenty minutes, far too long for gear to be down prior to touchdown.
In Segment #4, Mr. Valentine sits in seat 4A, but later on he is sitting directly over the wing. Seat 4A would not be over the wing on any modern commercial aircraft.
In Segment 4, when the runway appears out of the clouds, the airplane is way too high to actually make a safe landing.
The solid stone balustrade that the man hits after being propelled by the explosion of the Marine's grenade, visibly rocks as if made of lightweight wood or foam.
In the prologue, a technician's hand can be seen out the passenger window of the car.
In Segment #3 "It's A Good Life", shadows of the crew can be seen moving on the ground next to the large tree as the camera pans following Helen Foley's car as it arrives at Anthony's house.
In Segment #4, the red light on the camera is reflected in a shot through the airplane window.