^I know it! I think her problem with diaper changes is that she's too busy to lie still long enough. Don't worry, she screams bloody murder when I change her too. I have to distract her with all manner of silly songs, rubber ducks, nibbling her toes, etc. And when that fails, I call in Mr. Y to hold her down long enough to get her changed. She loves to roll over and try to crawl off the table these days.
The key to diaper changes, we've figured out, is to change her as quickly as possible before she gets bored and God help you if you have to change her clothes, too. Then it's End of the World Time.