I did run over to the Microchip booth. I've always been a PIC guy myself for my own little projects. Wireless has always been a lot tougher than any other form of communication (insert "duh" here) but this thing from Microchip may help quite a bit.
They've packaged up a ZigBee radio antenna (MRF24J40MA) and everything onto a little transceiver module. It easily talks to most of their PIC processors via a four wire SPI interface. I think even I could use that. And, I could buy it from DigiKey for $9.95. Very nice.
The demo shown here is a little tic-tac-toe game run wirelessly between two micro controllers.
Blogging at the show is good because I get to sit down and rest my feet