Cold kills the true flavor of the beer. When the company say's serve ice cold, they want deadened taste buds, and hopefully you will finish that beer quick. Schaffer beer comes to mind, because the only way it was palatable was when it was at 33 degrees. I find the most flavor in a beer, when I drain (down my throat) all the beers left out from last's nights party. It must be something about the open air, like a good Bordeaux. Good beer improves, try a Newcastle, and I'll bet you that it tastes a lot better in the morning cool, than it did ice cold the night before.