This isn't really a very portable computing solution but the new Sony VAIO Type A notebook is a pretty interesting system as it features a 18.4" LED-backlit LCD display with a 1920 x 1080 pixel resolution. Engadget has the full specifications:
The VAIO type A features an LED backlit 1,920 x 1,080 resolution, 2.53GHz T9400 Core 2 Duo, Blu-ray burner, up to 4GB of memory and 2x 250GB of disk (plus 1x eSATA jack for more), an increasingly rare Firewire jack for your camcorder, 3x USB 2.0, and a high-speed UDMA-enabled CF slot for quick image transfers off your DSLR's CompactFlash card. As Sony's newest media flagship, we're also looking at HDMI-out, 802.11n WiFi, GeForce 9600M GT graphics, and a full suite of included image and video editing software from Adobe. All this in a relatively hefty 3.9-kg (8.6-pounds) rig.
The notebook has a battery life of 2 hours and will be priced around 320,000 yen in Japan, which equals around $3,000.