Also, why don't terrorists just bring bags of phones onto airplanes and covertly LEAVE THEM ON? [Idea for new Stinger missile replacement: strap iPod onto a rocket, launch at jet.]
I'm thinking, if I were designing a jet and one day I discovered, say, during lunch break, that a GameBoy can cause my avionics to fail, I'd, you know, think about redesigning that puppy, instead of just putting in the manual: "Be sure to shut off all personal electronic devices during take-off and landing."
Seriously, do you feel safe then they announce that? Because I've NEVER been to a movie where someone hasn't forgotten to shut off their damn phone. Are we really betting our lives that everyone on the plane has shut off his phone, his laptop, his iPod, and his Palm? What if he has one of those pager watches? Do those count? Noise-cancelling headphones? Those are electronic.