WoL Mac from power-off mode? is there a way to wake the Mac out of a complete power off? I normally don't use the sleep mode,but I also want to wake the Mac sometimes for various reasons (it's a part of my entertainment system).

Any way I can do this?
No, not with "standard Macs".

The feature you are looking for is called LOM (Lights Out Management). It enables you to start a machine even if it's powered off.

Apple sold Xserve servers that supported LOM, but with regular Macs it's not possible.