My piggy, Pippin used to sit still and watch a whole episode of location, location, location on the lap top, even if we weren't with him. 45 minutes is a fairly long time for a wee piggy to watch without moving. He also liked documentaries and diy progs.
Merry is much more glamourous and likes Strictly come dancing, x-factor, Eurovision etc. Anything with lots of colours, sparkles and music.
My previous pig Dill was an only pig but was obsessed with medical dramas. He loved ER, Casualty and medical documentaries. He'd sulk if you switched channels!
Clouseau, a pig before Dilly, wasn't into sitting for cuddles and TV but had excellent taste in heavy metal music with metallica often a favourite of his (and mine!)
I don't know what it is about certain things but they definately all have their preferences...