This week's 1up show features a guy who modded his wii motes and uses them to DJ and it works amazingly, he uses them with his computer but still it is amazing how the Wiimote can be used for that.
http://www.1up.com/do/newsStory?cId=3160353
Watch the show, it's almost at the very beginning. Don't even need to watch the whole thing just that it is amazing.
Nintendo needs to make a DJ ing game on the Wii that goes along the lines of what this guy is doing, people will eat it up if it's well done.
Thanks to Blacksaber for the sig!