Got an email from Christine about her Mayan Week 2009. I love reading this stuff and seeing what the kids come up with. This year, Christine modified the challenges a bit - some nice new tricks for the participants.
You can read about the challenges and see some pictures here.
As for "LEGO MINSDTORMS NXT 2.0: The King's Treasure" - look for 5 more challenges using the new kit. But don't worry - I'm doing my best to make certain that NXT 1.0 owners will be able to run the challenges with minor changes/modifications to the robot and/or challenge area.
I'll try to get some teaser photos uploaded very soon.