Noisy kids on airplanes

Today I had the unpleasant experience of sitting in front of a loud, noisy kid on an airplane. This child was talking loudly through most of the flight, and was carrying on conversations with children in some of the other rows (his siblings, presumably).

What's more, he kept tapping my seat. (Remember, he was seated behind me.) On more than one occasion, I had to to turn to him and say, "Please stop hitting my seat."

Unfortunately, some parents don't bother to keep their children under control. They'll let the children talk loudly during flights, as though they were oblivious to the fact that other passengers are trying to rest or get some reading done. Argh.