There's been some posting recently on the web about some cool web services designed to help motivate and organize family chores. My mother had her own complicated systems for this in the old days, but i can see there is some real innovation in the area these days..
HandiPoints - http://www.handipoints.com/
Read good review here: http://www.makeyougohmm.com/20070117/4152/
ChoreWars - http://www.chorewars.com
Review here: http://www.makeyougohmm.com/20070725/4654
ChoreBuster - http://www.chorebuster.net/
Cozi - http://www.cozi.com/