Kotaku is reporting that there is an easter egg in Metroid Prime 3 with the voice of Satoru Iwata (President of Nintendo). I understood about 50% of this without the translation. Yay!

Translation according to Kotaku:

Hello, this is Iwata from Nintendo. You may not know from an outsiders point of view, but being a director is really hard! When things are really busy and stressful we (us directors) may look tired and sick, then people may feel sorry for us! But in my case, it’s the opposite, I get fatter and fatter, so then people don’t think I’m stressed at all!

No only if I could understand enough to play entire games in Japanese.