(photo ganked from here)
We've got a Le Pain Quotidien down the block from us (actually looking at the 'coming soon' signs down the street, it looks like there may be another within reasonable walking distance in the very near future), and they are an excellent thing.
(When you order hot chocolate at Le Pain Quotidien, you get a bown of steamed milk and a pitcher of chocolate syrup. To make hot chocolate, combine. It is like fun interactive activity + breakfast!)
The best part of breakfast at Le Pain Quotidien is the bread. You can order a basket, and they'll give you multiple kinds -- plus jams and chocolate spread and hazelnut spread to put on top of them. This clearly rates among the top breakfasts to ever exist.