La Belle Juliette, in the heart of Sain Germain des Pres.
I don't know if I will be going to Paris anytime soon, but if I do again, at the very least I'd like to hang out at their bar & restaurant, Le Talma, and have that chocolate thingy you'll see below. Seriously. I'm already there in my head. These pesky work deadlines are getting in the way of snacks and travel.