Nicely done. The whole Lego thing is pretty powerful. Even Lego thought so and the whole "mindstorms" product line came from that.

However, the really cool stuff as far as I'm concerned is the nylon conductive tape. That is super useful for things like making electrically active textiles and putting circuits into odd places. One ohm per foot isn't too shabby. I ordered a bunch of rolls of that (to make shipping reasonable) and I'm really interested to play around with it.