I think that we're all more than familiar with various aspects of Imperial entertainment - live performances and recordings of orchestral music, reading books, watching plays, and attending fancy parties. On the less sophisticated side of things, there are caged animal fights, gladiatoral combat, and robbing the local alcohol vendor.
However, what I'm actually asking about are things like television, radio, and other forms of mass media. If you were to walk down an average street on a civilised Imperial world, or a hive city, what sorts of mass media would you expect to be exposed to?
Propaganda posters are probably a given, but what about televised speeches from government, or televised sermons from the Ecclesiarchy? What about entertainment? Personally, I quite like the idea of cartoons and comics designed to appeal to Imperial children, ensuring that they are indoctrinated from a young age. (Things like brightly coloured, visceral cartoons about the Space Marines kicking alien ass and being presented as the supreme paragons of virtue... Or a comic about Imperial Guardsmen doing pretty much the same thing, in the hopes of encouraging more youngsters to set their sights on a military career.)
I'm basically curious about what forms of mass media entertainment might be found in the Imperium, overall...