What if you could fit your whole life ? all your music, all your photos, all your movies, all your email ? in a computer as fun and useful as an iPod? Now you can. Introducing the futuristic iMac G5 in 17- and 20-inch widescreen models. The entire computer, including a G5-based logic board, slot-loading optical drive, hard disk, speakers, and even the power supply ? dwells inside the enchanting display.