Standard iPod Headphones work somewhat (1 prong). Only yields sound if pushed in halfway - in my experience. May only yield sound in one ear, but better than nothing for Approach/landing. Should be able to remember but its been over 25 days since flying EK.

Quite handy if you start a new movie with final meal service 90 or so min before landing -- meaning without iPod headphones would be robbed of last 20 min of movie during headphone collection!