I found this app yesterday and I thought I would share as it is genuinely a brilliant idea.
http://itunes.apple.com/us/app/epicwin/id372927221?mt=8

Basically its a to-do list with rpg elements. Get xp, gold and items for completing your irl tasks.

I've had one of the most productive days in ages, and I'm about to do some more work.
for the xp.