Continuity mistake: During the big battle against the Chitauri, Captain America is zapped with a blaster bolt. When Thor helps him to his feet we can see a significant amount of damage done to his suit, just below the star on the right hand side. But later on after Iron Man destroys the Chitauri ship with the nuke, the damage is completely gone. (01:59:25 - 02:02:40)
Continuity mistake: When Caesar Flickerman is interviewing Katniss on TV, a chunk of her up-swept hairdo keeps changing, hanging down next to her left cheek in one shot, then it disappears in a close-up, then it's hanging down again. (00:56:15)
Continuity mistake: When housewife Alice is trying to escape with her daughter in the laundry room, she slams a mop through the ceiling. When she slams the mophead through the ceiling the last time and pulls it out, the hole left behind is maybe one foot across. When she lifts her daughter up into the hole it is now a good two or three feet across and reaches from ceiling support beam to support beam. (00:09:20)
Continuity mistake: When J falls off the green car by The Factory, cardboard boxes, a woman and a sailor magically appear out of nowhere. (01:01:40)
Continuity mistake: During the wedding between Dejah and Than when they are about to drink the water, Than's tattoo is on the right side of his face whereas in other scenes his tattoo is on his left. (01:46:25)
Continuity mistake: Snow and Emilie find the inmates used in experiments. Then Alex and a couple of others get the jump on them and they have a fight. Snow grabs his gun and gets shot at, and falls down the elevator shaft. He lands and is knocked out, with his left arm draped over himself across his chest as he lies partly on his side. The next time he is shown moments later, he is now flat on his back with both arms at his sides. (01:11:35)
Continuity mistake: The two backup judges have just arrived and are asking to be let into Peach Tree. Mama has a knife on the tech guy's stomach, coercing him to keep the blast door shut. In every shot from the behind, her left hand has a firm grip on the guy's shoulder. In shots from the front, the hand is absent. (00:55:00)