Microinfinity had a great booth for us hackers and hobbyists at CES 2011. Lauro had a LEGO NXT robot getting commands from a laptop to draw a line drawing of Mona Lisa, the LEGO robot is using their CruizCore® XG1300L MEMS gyroscope. The MEMS gyroscope is very accurate and is sure to be a great addition to the sensors available to LEGO NXT hobbyists.
You can purchase the XG1300L sensor here.