Pirates of the Caribbean: At World’s End
A huge part of this film takes place in Singapore. There are tons of different people that they meet along the way, including people who live in the country. At World's End takes place in 1729, and the country of Singapore was founded in 1819. Just a bit historically inaccurate, that's all.
Saving Private Ryan
Saving Private Ryan is set on World War II on the beaches of Normandy. As they tell the story of Private Ryan and the men who are trying to save him (and their stories along the way) the strict attention to detail was probably the last thing on the directors' mind... Not that it's a big deal. One of the details that they looked over was this motorcycle. Captain Miller can be seen leaning up against this motorcycle, but the problem is that this exact model wasn't produced until 1963. At least it looks cool.