Enable Kinect like sensors in the phone to recognize gestures and voice
Maybe I should clarify. I would like to be able to wave my hand in front of my phone to control it instead of actually touching the glass. This would be incredible if combined with speech recognition and the acceleromter.
I can't believe this isn't getting more votes!
I would love to be able to keep my screen clean and smudge-free by gesturing above it instead of touching it. That would be a killer feature.