Most microwaves UIs are still in the relative dark ages
You're kidding, right? when I can open the door, put food in, and press one button to make food, how could you possibly improve the "user interface"? I'd say that it sounds like most of the people here own microwaves that can do this, too, so I wouldn't say most.

By the way, mine is a GE Spacemaker, model # JVM1630WB 002. This might be the kind Rob is talking about. It's a built-in though. It substitutes for an oven hood/light too.

Ding! Oooo, my delicious clam chowder is done...
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Matt