Visible crew/equipment: At the start of the '500 Miles' sequence where Davy catches up with Yvonne, you can see a crew member indicating to some joggers to run into the scene on cue.
Continuity mistake: At the beginning, as Raimund is crossing the bridge in the rain, his umbrella turns inside out, but as it flies away to the river, it is not turned.
Continuity mistake: Young Dan and Jo are fighting over their meal. The position of the tray on the table changes several times, most noticeably when Dan leaps off the table. Moreover, when he returns to it after he jumped off the bed, the tray is empty minus a little red berry, but it still had rice and other food on it earlier. (00:18:30)
Factual error: When Braniac's robot probe enters the atmosphere over Arizona, fighter jets attempt to shoot it down by hitting it with missiles. The pod is still going fast enough to be on fire from reentry. A missile could not have caught up to an object going that fast. (00:11:30)
Factual error: When Oscar's mother visits him in prison on New Year's in 2007, a mention is made of him having taken his daughter to see "WALL-E", which wasn't released until the summer of 2008.
Factual error: This is set in the 90s, but in one of the scenes at Stevie's house you can see a Goodman AC unit that is a 2006-2011 model.
Factual error: They inject the infected Brunel with antibiotics to fight the bacteria, however there is no pulse and that means the antibiotic can never spread through the body, as there is no blood circulation.
Continuity mistake: When Wanderer and Melanie first start to work together to escape, she walks out onto the balcony above a pool and places her hands on the railing, very close to one of the vertical dividers of the railing. The camera pans down to the pool then cuts back up to her. Suddenly, she is equal distance from the vertical dividers on her left and right, and the doors and windows she just walked through have disappeared behind her. (00:22:50)
Continuity mistake: Before Iggy gets his horns, he got a shot of whisky in the bar from the blonde girl. The level of whisky changes between shots.
Continuity mistake: Just after Miller, Casey, and Jeff Chang get away from the college's health center and steal the SUV, they plow through a row of street-side parking meters that snap off and hit the windshield, cracking it. Through subsequent shots, the windshield continually goes from being cracked to completely undamaged.
Continuity mistake: When Alan drops his driving gloves on the way out of the board meeting, the way they're arranged on the floor changes between shots.
Continuity mistake: As Charlotte and her father are hearing Paganini play the violin in their house, they walk to the stairs. As they reach it, her father's head suddenly is turned facing up the stairs.
Continuity mistake: When Carlos is confronting Manny about the Black Forest, the light on Carlos' face keeps changing. The front views show the right side of his face in shadow. But the views from behind and side show the right side of his face is in the light. (00:34:50)
Factual error: The French Connection is mentioned at one point. This is 1970, and the movie didn't come out until 1971.
Visible crew/equipment: When Ethan Hawke and Julie Delpy are in the hotel room arguing, they sit down at a table in the room. In the glass reflection of the framed picture on the wall, you can see the cameraman.
Continuity mistake: When Chantry is in Dublin writing her list, the list reads: Toronto - My Job - My Family - My Friends - My Life - Wallace. In the next shot of the list, it just reads: My Friends - My Life - Wallace. The first three entries on the list disappear.
Continuity mistake: As in most movies I've seen where size is a main factor, the animators did not pay much attention to scale. In the scene where the main character leads the leaf people to her father's house, she is jumping and lands on the thinnest pencils I've ever seen. They have the width of the pencil smaller than her foot. However later on, it is shown that a push pin is almost the size of her body.
Continuity mistake: In the gym before the lady says "why do we have to turn around" Roxanne is facing the front and then turns and then when the man says "if we please" Roxanne is turning around again.
Suggested correction: Roxanne was looking back at the janitor guy so therefore she didn't turn around twice.
Revealing mistake: When Tanya has just died, her face goes still and she stops breathing, but you can still see her pulse beating in her neck.
Continuity mistake: When The Rock is putting early in the movie he is on the phone, when the shot comes back to the room the putting green is missing. (00:01:50)