Both my ears are double pierced, but I usually only wear a pair of studs in the top set. I'm thinking about getting a third hole in one ear.
I used to really want a nose piercing, but not so much anymore. Thought about a cart. piercing, but not after hearing everyone wail about how much it hurts for months afterward. Belly button piercings just aren't for me, and with as much as I get jumped on by dogs at work, would probably get ripped out. There's really nowhere else I'd want a stranger sticking a needle into anyway.