My favorite Viet restaurant in Paris serves these, steamed dumplings with pork and mushroom (( think) filling. They call them raviolis vietnamiennes, and I believe the Vietnames name is "banh cuon" (or so at least I was informed by a French website).
I've never seen them on a vietnamese menu here in the DC area. Does anyone know where I can find them? They are perhaps the single most delicious vietnamese dish I have ever had (with the possible exception of the five spice chicken at the old Cafe Dalat in Clarendon).