Windows 8 will shift from the standard fugly BIOS system to a Unified Extensible Firmware Interface (UEFI) -- giving users a high resolution logo and a graphical menu to gaze upon while powering up their PC. Besides just looking better, the menu lets you boot to a different disc, OS or USB drive using pretty pictures and words as prompts. If you're into a little self-inflicted eye torture, you can always pull up the command prompt menu from nightmares past. Check out the throwback video tribute to the computers of yesteryear after the break.
Update: Just to clarify, Microsoft isn't actually building flashing mobos, but it's pushing towards UEFI to achieve "significantly richer capabilities" while booting.