The penultimate Harry Potter movie had its terrestrial premiere last night. I'd liked to have watched it but I didn't think I could ask my mother to sit through two to three hours worth of something she wouldn't understand. She has no tolerance for any kind of fiction on TV- unless it's Dad's Army. This isn't just an old age thing. She always used to sleep through the programmes my father and I enjoyed- the ones with spies and detectives in them- wake up as the credits were rolling, ask us what had happened then complain it wasn't fair when we wouldn't tell her.