@Merry Andrew,
Well, I've likely never had a good one -- just from the Ukrainian deli up the road in my old Chicago neighborhood. Grandma only passed down the piroshki.
Not a big fan of pot stickers either, though, and that's pretty much the same concept...
Incidentally, Grandma didn't do a borscht with piroshkis, either. She made this great thin tomato-lemon-dill soup to dip them in. Great complement to the cabbage-black pepper-ground roast beef of the piroshkis...