Delta have a little linux computer for each seat that shows films and plays games and such. These go tits up often. When they do you get to see the Linux boot process for a few minutes. On my last flight you got to watch it over and over again all flight.
Instead of showing the boot process Delta should show a splashscreen with some sort of image/ad.
It is fairly easy to do this . Of course they should actually stop linux from freezing and such but this is a simple change.