When the robot-girl Tima remembers and first reveals her name to the human boy Kenichi, on the wall behind her there is a map of Lake Ontario showing the coastline with Toronto and neighboring towns, but turned 90 degrees to the left.
Initially delayed, due to concern that its images of crumbling skyscrapers would shock people traumatized by 9/11, it actually did well enough for Sony to extend its theatrical run for a few more months.
The trivia item below may give away important plot points.
The film has a brief "coda" scene following the end credits. A shop building is shown with a sign reading, "Kenichi and Tima Robot Company," with Tima visible in a window of the shop. The scene suggests that Kenichi managed to rebuild Tima, and they set up the shop together. The scene was included in the English-language theatrical and Blu-Ray version of the film, but is missing from the English DVD version.