Not such a great idea

Clench your teeth for tunes, Japan researchers say

"In the laboratory, grinding right teeth can play and halt music on an iPod while clenching left teeth makes it skip to the next track, he said."

I agree that it can be a pain to operate your iPod with your hands, this would be bad news for me to have since I already grind my teeth (mostly when I'm sleeping) and clench my jaw.