Some of you already know me, but I bet most don't...super short version, I teach physical computing in the SF Bay Area, and make art.
I recently started (less than a week ago in fact) a project to ease and/or speed up the Basic Stamp and PBASIC users' transition to Arduino. We have a wiki - http://pbasic2arduino.pbwiki.com/ - that is coming along nicely.
The initial plan is to take many of the tutorials in Parallax's "What's A Microcontroller?" book and show them in both PBASIC and Arduino. Many more examples will also be made available over time. There are also (or will be) many other parts to the site like command-for-command comparisons in both directions, hardware information and comparisons, and a syntax difference tutorial.
So this is mainly just an FYI, although we invite participation at any level - send us examples, come make additions and corrections, send us advice, or just send Basic Stamp users to the site when it comes up.
Thanks for your attention! CTP
ps - if you are interested in contributing, the edit password is arduino :)