Pan's Labyrinth

Guillermo del Toro is famous for compiling books full of notes and drawings about his ideas before turning them into films, something he regards as essential to the process. He left years worth of notes for this film in the back of a cab, and when he discovered them missing, he thought it was the end of the project. However, the cab driver found them and, realizing their importance, tracked him down and returned them at great personal difficulty and expense. Del Toro was convinced that this was a blessing and it made him ever more determined to complete the film.

When Ofelia goes down the stairs in the labyrinth and is talking to the Faun, his shadow still shows Doug Jones' legs while they are in the stilts. The special effects crew took out his physical legs, but the shadow still exists.

The two "Stick Insects" are credited as Cheech and Chong, after which it says "MAY THEY REST IN PEACE".

There are three different versions. Runtimes are: "1h 58m (118 min), 2h (120 min) (Finland)" and "1h 52m (112 min) (Toronto International) (Canada).