The LG XF1 is a 500 GB "Multimedia HDD" that packs a HDMI-out for quick media playback, and has a slick looking design to boot.
However, the XF1 looks geared towards the mainstream consumer crowd, as it only plays back video at 1080i, and fails to support the h.264 or MKV standards. It does, however, support the AVI, Xvid and MPEG family of codecs, along with all the major audio ones. Price and availability are yet to be announced. [LG via Everything USB]