LEGO: for donating the first NXT set and other things.
Texas Instruments: for including this project in the beta testing group.
TinyOS community: for at great operating system, well-maintained website, software, tutorials, and TinyOS programming book (P. Levis), intelmote (P. Buonadonna), idea of using TinyOS on LEGO (RCX) (D. Culler), and the emphasis on educational aspects (P. Bonnet).