After my last high power bill I looked at possible causes and was dismayed to count the number of items in this household that were left on standby.
Including PC , HI-FI & TV related I counted no fewer than 16.
Apart from any possible safety issues , the energy savings gained by turning everything off is quite considerable.
Whilst on my little purge on all things wasteful I also installed 7 energy saving bulbs in strategic places ,reduced the central heating time by 1 hour per day and the stat by 2deg.
Scrooge ? I dont think so.