Live From CES: Lego Mindstorms NXT - Gizmodo - wow. I actually wanted to hold back on Lego purchases, especially since I don't have time for them anyway, but this sounds really too good:
The new NXT “brick” is a 32-bit microprocessor that can be programmed using a PC or, for the first time, a Mac. It’s Bluetooth enabled, which makes the instructions you plug into the LabView software easy to transfer to your bot, and even control it from a PDA or mobile phone. It’s got three servo motors with inbuilt rotation sensors for precise speed control (one of the demo units on display walked quite fluidly). An ultrasonic sensor lets the robot see, it will recognize sound patterns and tones, the light detector is sensitive to both color and intensity variations, and there is a touch sensor to let the bot feel its way around as well.
This definitely sounds like a must-have factor in the range of 100%