I find that the airline censorship can often ruin the film, and the interruptions and 'quality' of sound are just nails in the coffin.

Oh yeah... forgot to say. Each movie had a small intro screen which showed whether or not it had been edited for content. Most of them said "unedited". They had some Sex in the City and Sopranos episodes that I watched (even though I'd already seen them) which were completely unedited.