Other mistake: When Peter Parker is walking down the streets of NYC on his first day as a "normal, powerless human" It is clear that the people in the background are not extras. You can see several people watching him during the shooting of the scenes.
Frank Scialdone
11th Feb 2006
Spider-Man 2 (2004)
11th Feb 2006
Presumed Innocent (1990)
Other mistake: When Harrison Ford returns to the crime scene to search for "evidence" we see blood stains on the carpet, which has been on the carpet for days. The blood is bright red and shows no signs of coagulation, but blood turns dark red when it coagulates after only a few hours.