http://online.wsj.com/public/article/SB116441076273232312-IHR8Xf3YEG61QlW0e7hA_kHAA8w_20061224.html?mod=tff_main_tff_top
Nintendo's new system forces players to move their bodies, causing aches for some couch potatoes; a case of 'Wii elbow'. (I know I plan to hurt when I get my WII, and Nunchucks!!! :)