[bigiain]

Another also relevant – especially for people who'd rather buy the hardware than put it together from parts: http://dev.moorescloud.com/ and http://holiday.moorescloud.com/

Its (effectively) a RaspberryPi and an Arduino on a custom board, with Wifi, 4Gig SD storage, and 50 RGB Leds – with a bunch of software (based on top of ARCH Linux). At the current intro price – my RaspberryPi based imitation cost more in parts that the Holiday @ $129 (even though I'm using WS2801 driven leds and don't need the outboard Arduino, a 'Pi + SD Card + power supply + USB WiFi + 50 WS2801 LEDs cost me over $150 - the LEDs alone cost me $90 from Adafruit (a while back now)).

(I said "effectvely", 'cause it's actually an iMX233, not the Broadcom SoC on the 'Pi - it doesn't have onboard video or ethernet, but it does have a USB wifi adapter inside.)

(Full disclosure, I've doing a bit of web-service architecture and devops for them…)