My two cents? Nintendo's marketting isn't really good, but for the first time in years, it isn't bad, either. Of course, I say it isn't bad because it doesn't seem as strange, out there, and inaccessible to everyone as previous commercials and advertisements have been. I say it isn't good because it isn't really getting people talking about games. The hottest Nintendo game isn't really water-cooler conversation anywhere, because people don't care that much. Sure, it'll be talked about a little bit once a month, but not thanks to marketing. That's a problem to me, but it's still a victory that the Nintendo ads haven't been stupid, like they could be.
As for the naming aspect, I think naming the system the Wii was brilliant in a way. Compare: Xbox, Playstation, Revolution, and Wii. The first three seem geeky, high-tech, very unaccessible, and intimidating. The last one sounds like it could be anything, and is intriguing. The name really was instrumental. It shows a new idea in videogames, and not in an intimidating way.