I don't know if this has been linked to before, but here goes:
http://www.kingdomofloathing.com/
It's a quasi-RPG where everything is really ugly and meat is the currency. I've only played for a day (apparently, you get 80 APs every 24 hours), but it seems cool.
EDIT/BUMP: Seriously, people, this is the best web game ever. You should all play it.