This was the first Pokemon film commercially released in American theaters since Pokémon Heroes (2002), appearing in 375 locations over the weekend of December 3 through 4, 2011.
Reshiram and Zekrom are based on the yin yang, which in itself symbolizes the balance between opposites.
Victini as a Pokemon was created specifically for this film. This is the first time in the history of the franchise this has been the case; previously, any Pokemon stars in films were created first, and ideas for the films came afterwords.
According to early sources, Zekrom and Reshiram were played by different people: Michael Chobot and Tom Wayland, respectively. It was almost a month after the film was released that it was revealed that they were played by the same person: Marc Thompson.
Some American theaters gave away goody bags to anyone who went to see the film. The bags' contents included a movie sticker, a jumbo Victini trading card, the first chapter of the Black & White manga, and a code one could scan to get Victini in a Nintendo 3DS Pokedex game.