Can't believe this hasn't been asked before, but I can't seem to find anything so...
I've currently got a very light, very thin 32" TV mounted on the bedroom wall. It's perfect - except for the fact that I'd love to make it a bit more minimalist and put the cables through the wall it's mounted on, into the fitted-cupboard in the room behind it.
In my mind, the best way of handling this is to drill a hole straight through the wall into the cupboard, reinforce it with a bit of metal piping or something, then block both ends with some sort of plastic/sponge filler.
However, I'm worried about fire safety - I've heard that if you start to play around with holes between walls, it can seriously degrade the compartmentalization of the rooms and fire can spread more easily.
Am I insane? Too cautious? Or are there serious considerations when mucking about with the integrity of 'rooms'.