Is there a Scratch-like Arduino IDE?

It's in the works. A friend of mine, Ed Baafi, is working on a Scratch-like interface for Arduino. I believe he may be presenting something in Cambridge (MA) at the science festival this April.

Using a python shell script we (by we I mean Ed) were able to interface one of my USB+XBee interfaces with the my ZB1 (arduino compatible board + XBee). Text typed into an entry box was displayed on an LCD.

His site is http://www.modk.it

There is a program called Catenary that allows Scratch programs to talk to an Arduino board.

There are more details and a user guide found here: http://scratchconnections.wik.is/User:Chalkmarrow/Catenary

This has been discussed at some length (for AVRs) here:

http://www.avrfreaks.net/index.php?name=PNphpBB2&file=viewtopic&p=484219