i have 2 servers at the house runing pretty much all the time.. and another few that are on during testing stuff thats all.
then i have my gaming machine which is on 24/7
and few other machines that i have laying around that are not on all the time only when i need to.
when i start my file server with 8 drives and 2 power supplies the whole house lights dim

so i just keep it powered up all the time...
-E