Lpc2000

That new Lego toy looks nice.
On the picture it shows three servo motors, an ultrasonic range finder,
switch, microphone and an LED. Seems a bit limited (like to old brick).

Would be great though to use my own controller with it - the current
available Lego brick is nice for simple stuff but I'd like to do more.
But it's amazing what you can do with some standard lego blocks and a bit
of 2-component glue ;-)

Other option I could do with is a real Number 5 (AKA Johnny 5) to play
with :-)
Blueprints may be coming http://www.johnny-five.com

A nice option for those wanting to control a robot may be one of the robot
arms from Lynxmotion. For $ 265 you get the Lynx 6 arm with motors and
gripper but without the electronics
(http://www.lynxmotion.com/Product.aspx?productID=20&CategoryID=35).
The lpc21xx has exactly 6 PWM outputs that can be used to control the arm.

Or try Pino (http://www.symbio.jst.go.jp/PINO/index.html), all mechanical
drawings are available but you have to spend some nice $$$ on servo motors
...

Rob