Based off of the DS game of the same name Nintendo recently shipped out a few copies (14 to be exact) to the press to check out. One thing they wanted to spotlight was the feature that allows you to share content and characters between DS and the Wii consoles.
Unfortunately this feature was abused by someone as the copies sent to the press contained a Sheep Character that repeatedly uses the "N" word while you are in conversation with him.
This "small" issue although it is big news now runs the risk of being ignored by parents not realizing exactly what can be pushed back and forth between these games and systems. Nintendo released an immediate statement blaming the internet.
Read more and Nintendo's Statement at Kotaku
"Previously played copies of the 2005 DS game Animal Crossing: Wild World were sent to 14 members of the media to demonstrate the ability of players to transfer items to the new Animal Crossing: City Folk for Wii. We regret that an offensive phrase was included without our knowledge via a wireless function that allows user-generated catchphrases to spread virally from one game to the next. "