The Amazing Spider-Man 2 (2014)

Continuity mistake: Harry and Electro are in the office and confront the new CEO. Electro shocks him, and he falls to the floor. The first shot of him is clearly not the same actor, because the man on the floor has a full head of hair. The second shot it's the original CEO, who is mostly bald.

Continuity mistake: When Gwen is giving her speech, in the background are two boats passing. In the next shot they disappear.

Continuity mistake: When Stan Lee is in the audience of the school ceremony, in the close up somebody is on his left but in the open view that person is gone.

Other mistake: After Electro gets the two cables on his chest, his clothes do not burn and have no marks.

Other mistake: After Electro disappears in the asylum then comes back, the underwear and the electrodes should be gone by then.

Continuity mistake: While Rhino is getting webbed by Spidey on the street, the sun changes between shots.