I'm shocked that nintendo would call their console wii. I have no problems with new words, words are constantly being made and added to the dictionary, but honestly, naming it a slang word for piss? This is a brainless idea for a English speaking countries.
Obviously the name will make no difference to the quality of the console but I can think of many people who will actually think the name is too stupid and will be instantly turned away from buying one.
At least iPod, Yahoo and Sony don't sound like human waste.