TV Sat systems? Never unplugged the telly at the wall, thought it didn't do anything.
Quite good with most little stuff like that though, phone charger never stays on, no spare lights on, barely use the heating (in a block of flats, every f***er else does so it's boiling anyway) even things like not taking plastic bags and re-using the same water bottle for months on end. Feels a bit futile sometimes but it's dead easy to do, the more people that put a bit of effort in the better I guess.