The one click main panel that richardw mentioned is pretty neat. Altough i dont use it for my sister WC pump (because i had a relay before I got the one click). Its very easy to use - just plug your computer into the first socket, and all your peripherals on the other socket (speakers, monitor, printer, pump...).
When ure PC is turned on, the rest of your equips will get power in 3 seconds.
When you turn off your computer, everything else turns off (completely, not standby) in 3 sec.
Simple and effective me thinks