I like cool devices and Sony has “done it” for me a couple of times. Their latest laptop, the PCG-X505 is THIN. 9.7mm thick and weighs only 785 grams! Than is thinner than my palm!!! It has a 1GHz processor, 512MB of RAM, and a 10.4-inch display but no wlan built in and all normal connectors are moved to an external mini-dock. Read all about it!
Cool! I just found an even thinner one. Must have an iPod hard disk! http://sharp-world.com/corporate/news/021010.html