Continuity mistake: When Daredevil kicks Bullseye off his motorcycle, Bullseye has nothing in his hands when he's flying through the air, but when he lands he's holding Daredevil's baton. Watch closely when Daredevil's kick connects, and you can see they never even come close enough for Bullseye to grab the baton, or for him to snatch it if it was dropped. (00:59:40)
Continuity mistake: When young Matt is taking a shortcut home and he sees his father beating up a man, he runs away. While he is running, he drops his report card. When we first see him, he is riding his skateboard and not holding anything. [This scene is actually edited from a much longer scene (it is included on the 2004 Director's Cut DVD). Matt was looking for his father at a construction site near the school, and learning he wasn't there, Matt drops his report card into the puddle. This is why, later, he is shown running away with only his skateboard. Still a mistake, but there's why.]
Continuity mistake: When Electra and Matt are fighting in the playground, Electra throws her jacket on the ground and during the scene the jacket moves around.
Continuity mistake: In the final scene where the reporter sees DD on a rooftop and bidding him "Good Luck", DD then runs away the next shot shows him jumping off a building. It's very high but the previous shot only showed him on top of a 3-5 storey building.
Continuity mistake: In the sex scene, during one of the first few shots you can see the fireplace, and it is on Ben's right. During the last shot, as they move the camera up to view the fireplace, the fire is on Ben's left.
Continuity mistake: When Bullseye stabs Elektra it cuts to a view where you can see the sai go into her stomach and out her back. Then they go to a close up of Elektra's face to show the agonizing pain she is feeling. When they zoom back out, Bullseye still has the sai pressed up against her belly, but yet it's not sticking out of her back. Then he finally pulls the sai out of her stomach.