Dieu du Ciel has a small brewpub that generally has a mind-boggling array of their beers on tap (something like 14-15, all brewed in house and generally excellent). The food selection leaves something to be desired, but the beers can be hard to get in the US (despite/because of Shelton Bros. distribution). Pch Mortel and especially Route des pices are worth seeking out, if you can find them.
