Well, with the Apple Cinema Displays, all you do is touch the power button on the display to turn on the computer... my guess is thats why they removed it from the keyboard, otherwise people with Cinema Displays, PowerMacs, and a keyboard would have 3 different ways to turn on their computer, lol. 😛
And I remember being the smart one in my old old school when we got those iMacs, watching all the kids look for a way to turn on their computer 😀 my favorate one being when I saw a kid staring at the front part (where the CD Drive is) and poking to the left and right of it for 5mins... now thats just sad.
Also, when my school received a bunch of iMac G4's, I couldnt find the Power Button right away. Why did that one have to be in such a weird place? since with the iMac G4's, they included the Apple Keyboard with the USB ports on the sides which didnt have a power button on it. You think they would put it on the front or something... i dunno