I've been told I'm a fairly competitive person. And, like most people, I think I do more work around the house because I notice all the chores I do, but I don't notice the stuff my husband does.
After spending several days playing World of Warcraft, I made the offhand comment that I needed quests for doing the laundry and cleaning the kitchen. Fortunately, there's already a site for that. It's free, so my husband and I made characters and have been tracking chores for about a week.
It's too early to see if I really do more chores, but it's at least fun tracking it. (Oh no! Not another drain beast while doing dishes! I just fought one yesterday while cleaning the bathroom!)