27-inch iMac as a standalone monitor, the feature's been pretty limited in practice, since it only works with other DisplayPort devices like the unibody MacBooks. That's about to change thanks to Apogee, which just posted up a video demo of an as-yet-unnamed HDMI-to-DisplayPort adapter being used to play Xbox 360, PS3, and -- yes, it's true -- Blu-ray movies on Apple's latest all-in-one. Never thought you'd see the day, did you? Apogee hasn't disclosed pricing or availability yet, but we're told more info is coming soon --we'd guess sometime around CES. Video after the break.