The cab scene on Washington and Cherry Streets in San Francisco could not be entirely shot in San Francisco due to filming restrictions and the opposition of the neighborhood residents. So, a set of the intersection, including the street, apartments and crime scene was constructed at Downey Studios just outside of Los Angeles, California.
Zodiac (2007)
Although the alien that hatched from the dog was a rod puppet, early filmed tests used an actual dog in an alien costume.
Alien³ (1992)
Daniel Craig gained weight for his role as Mikael Blomqvist to remind himself and the audience that he was portraying a journalist, not James Bond, and wanted to appear as normal as possible.
The Girl With The Dragon Tattoo (2011)
In the short scene when Brad Pitt and Edward Norton are drunk and hitting golf balls, they really are drunk, and the golf balls are sailing directly into the side of the catering truck.
Fight Club (1999)