A question about XBox 360

I bought an XBox 360 a few days ago, and needless to say, I'm loving it. However, I've recently broken my leg and am bedridden, and can't afford to be constantly getting up and down. I've found the feature where you turn the system on from the controller to be very useful, but is there any way to turn it off from the controller as well? I entered the XBox menu and couldn't find anything there about switching the system off remotely.

Hold the guide button down for about four seconds. It'll bring up an option to either turn off the controller, turn off the system, or cancel out of the menu. ;)

Okay, thanks. :)