L.B.
For my son it was finding the right nipple that did the trick. He would try and get frustrated until we found the right nipple. We use the Born Free bottles and nipples, but those breast-shaped ones someone mentioned earlier look very cool, too. They have both these bottles at Whole Foods in Oakland. We had luck feeding him from the bottle before he got too hungry and frustrated, once we found a nipple he could latch on to. If its a question of wanting Mommy, as is often the case, then I've heard leaving the house works well.