I've simply 2 power strips in my "pc corner" with a nice big switch and power surge protection, one for alway's on devices (NAS and adsl) and one for the rest... configured in my pc's to boot on getting power. only one switch and all boot... very handy and saves me $$ (or better euro's)...
Maybe the Nxx power supply is really "clean" but screen's, pc's and power adaptors for scanner/laptop/usb disks/... really use about 100 wat electricity when "off".
Additionally bonus: when all off (like on holliday or weekend out or thunder coming over) I have nothing to worrie about...

Maybe "green" is for some people for sissies, but do you also throw every day a dollar in the garbage can?