This is definitely my favorite undocumented feature of the Wii.

Everything beautiful about the Nintendo Wii can be summed up in one embodiment: The Help Cat. Living deep within the Photo Channel, this is my 2007 vote for the greatest, weirdest, most terriblewonderful User Interface Design idea of all time — contextual help you have to catch. Something about this is so totally Nintendo, totally ridiculous, and totally a great use of the Wii Remote.

Help Cat video (QT)
Cabel Blog LOL: Tragedii

source: A Whole Lotta Nothing