Mine arrived yesterday.
Image swiped from wikipedia.
From wikipedia: The SheevaPlug is one of the first "Plug computers" on the market. It features a 1.2 GHz Marvell Kirkwood 6281 ARM-compatible CPU (aka Feroceon). The device has already been called an "NSLU2 killer" due to its low price (and the discontinued status of the NSLU2).
The SheevaPlug comes supplied with Ubuntu 9.04 ARM build. The SheevaPlug has been supported since Linux Kernel version 2.6.27 and is currently shipping with 2.6.30-rc5 Marvell offers a development kit to assist in the development of software for the platform. The kit includes the GCC cross-compiler for ARM. The device includes a mini USB connector wired to an FTDI FT2232 chip which provides the developer's computer with access to two ports, a JTAG port connected to the internal JTAG bus, and an RS232 port connected to the Kirkwood processor's serial port through which the bootstrap and kernel console can be accessed. This debug console can be accessed from any computer with support for the FTDI bus translator (FreeBSD, Linux, Mac OS X, Windows).
One of the things I want to do is to install a web server, and create a mobile homepage for myself. This homepage would have weather, news headlines and my most used links on it in one 'plain html' fast loading page.
So far I've been playing with it and setting up ssh, console and vnc access to it. I also installed a faux X server (Xvfb) that I can access via vnc, though that was just for fun, rather than for any particular reason.