ArduinoBlocks
Wow. Someone went ahead and made a graphical programming language for Arduino. From the blog entry:
Finally I can release an Alpha Version of ArduinoBlocks. Only the Windows Version ist availible for download as you have to compile it for the different OSs and also for the different Mac processors. The idea is to have a visual blocks language for children that is translated into Arduino code.
I managed to get it running on my Mac by copying the .jars into a copy of my Arduino 0007 directory. Here's a program to blink an LED:
This is a lot like the programming interface for the Pico Crickets, but not quite as refined.