On some airlines (notably LX), these screens are quite useless when the pax in front goes to full recline. You can't adjust the screen to show anything but a ghost picture.
Had that in VS PE the last time I had to use them ... as a 6 footer I
just managed to slide down the seat and bend my neck enough to see a picture.
Who was the "engineering" dimweed who didn't put enough angle of dangle in the hinges of those things? Was it actually thought through? Eight hours or more stuck in a tube is bad enough without additional aggravation.
Air Rage ... that's me! Especially now it's also non-smoking for a virtually a day before you land at your destination!