The article appears as "archived" (it was last updated in November 2009), but interestingly it is still live on the Apple website and hilarious.
In this document, Apple teaches you how to charge iMacs G5 (and only them!):
Before moving your computer, make sure that all cables and wires are disconnected.
Pick up the iMac G5 by holding it by the sides of the computer. Carry it wherever you want.
Did you learn?
(via Business Insider)