We don't know what the LED X found on the side of this Asus Blu-ray drive is supposed to symbolize to the people of Earth, but we aren't ones to argue with pointlessly glowing aesthetics.
The Asus SBC-04D1S-U External Slim is one of only a few USB-based Blu-ray drives that reads BDs at 4.8x, plus it can read/write DVDs as well. (Sadly, it's tray-loading.)
While there's no price/release date at this time, keep in mind that USB drives like this one tend to rely on your computer for the actual Blu-ray decoding. So while the SBC-04D1S-U will technically play Blu-rays, it's up to Cyberlink software powered by your processor/video card to render the data. [Asus via EverythingUSB]