When you cook them on the grill, they get smaller but damn tasty. When you boil them, they plump up and are also tasty.
BUT
When you cook them in the microwave, areas crinkle up and get wrinkly and white powder forms on the outside, for whatever reason.
It's a disgrace that such an American food can come out of the mickeywave so mutilated. Hamburgers are the same way...they taste horrible from the microwave.
</Random rant>