The Curious Case of Benjamin Button (2008) - 6 mistakes

Factual error: When the tug leaves Russia, after the US declares war, all its lights, including a searchlight, are on. During war time, ships of nations at war sail under complete blackout.

Continuity: When Daisy, now in her 20s, is dancing for Benjamin at night, after their dinner, in a gazebo, she's dropped her coat right by her shoes approximately in the middle of the gazebo. They can be seen as dark silhouettes near Daisy's feet. Cut to a long shot, the pile has moved to her right, way off center. Cut back to a medium shot and it has returned to its first position.

Factual error: When Benjamin and Daisy are sailing "into the Gulf" and "along the Florida keys", the background shows mountains which do not exist in Florida.

Factual error: Benjamin leaves his family at some point after his daughter's first birthday (1970), and definitely before her second birthday. But a 1973-1977 El Camino is parked in front of their house as he rides away on his motorcycle.

Continuity: In the scene where Benjamin drinks tea with a woman every night and they have a conversation, the woman's tea glass has varying levels of tea in it between every cut during this scene.

Continuity: In one of the scenes where the daughter and mother are in the hospital room, the nurse enters as the daughter is taking off her vest. In the next shot, her vest is back on.