Miyamoto said Nintendo used E3 as a platform for spreading the word to a broad audience based on the media present at the event, they’re not speaking to the core audience. So, if you’re a core audience gamer and you were confused on why Nintendo didn’t build their presentation to be all glitz and glamor, it’s because they weren’t talking to you.
Based on the fact that E3 is a “press event” and their looking to get out the word to the general audience, press is needed as a staging point. The audience sitting in the seat was a bit more intense in nature and have high expectations for each presentation.
With sites like gamespot streaming the event live on the Internet it’s not too hard to imagine some casual gamers and non-core-gamers may have been listening. Or, perhaps their hoping to get old school media in the form of magazines and journalists to write about their upcoming product launches.
Or, perhaps they just showed up because they’re expected to?
(Thanks, Joystiq)
Wii Supply 
Nintendo has already announced the Wii Motion Plus at E3. This device is supposed to fine tune the motion sensing capabilities of the Wii controller and make it a bit more refined for gaming. Sounds, to me, like a hardware patch, no?
It seems Miyamoto let it slide that there will be a Pikmin game arriving in the future, for which systems? Probably the Wii if we had to guess, but it wouldn’t be surpising to see it on both their hit product lines.