The above video image comes from Nintendo.co.jp via Google Video and appears to be some kind of menu system, the name found on the video reads "Nintendo RS" and is dated 12/29/2005. Upon first viewing, you might think you're starting to play Electroplankton, but in the final frame or two there is an image of menu options and Nintendo RS is clearly seen at the top left corner. You can also see a "Start Game" and "Introduce a DVD" option.

The Google video page includes the following description: "Menu beta that Nintendo gave the companies." Not sure who uploaded the short video, and/or if it was in fact by Nintendo of Japan, but the Nintendo RS moniker is very similar to the Nintendo DS logo in style.