http://consoles.gwn.com/articles/article.php/id/763/An interesting look at all the rumours people started spreading about the Wii, along with whether they turned out to be true or not. The one that caught my eye the most was regarding the accelermometer which many dismissed!
"This rumour was presented by GameSpot after being found in a patent application. The site immediately dismissed it as “bogus”, though conceded that “it wouldn't be surprising if the acceleration sensor were incorporated into Nintendo's next-generation plans in some way”. Given all the talk of gyros at the time, it’s odd that accelerometers didn’t rate more of a mention."