Google AJAX API Playground
code.google.com
code.google.com
The guy that wrote this hangs out at irc://irc.freenode.net/googleajaxapis which is also a great place to ask questions on any of the APIs :D
I've used the chart API in an internal app such that the user gets a real-time feel of the data as they change the parameters without having to hit "Submit" every three seconds. Also note, the motion api is derived from the Gapminder organization they acquired in 2007.
thomasmallen -- A shortcut for run is a good idea... you should add it as a suggestion to my issue tracker: http://code.google.com/p/google-ajax-examples/issues/list
Also, don't forget my code is all open source: http://code.google.com/p/google-ajax-examples/source/browse/... You can pull it down from SVN and run your own local copy w/ app engine dev server in 10 minutes.
edit: Bangla is only working where they're using svg. Still broken in the bitmaps. Does anyone know where to file bug reports?