I would be curious about this as well. I noticed that it wouldn't support my iPhone 3G's movies, but I was happy enough that the USB port kept the iPhone charged while watching. This time around I'm taking a netbook with me and use that instead.

Quick question - I've used Euro plugs on the A380 before fine, but had problems with the AU/NZ plug not picking up any power. Has anyone tried the UK plug? (Netbook has UK plug, figuring out if I should take a universal adapter on board or not). Is it the same for the B777?