If you are wondering where to find the sample AIR applications found
in the lower right corner of Aptana (with the Air Plugin installed),
below is what appears to be the original author (Kevin Hoyt, and his
blog entry releasing them to the public). These are basically some
35 discrete examples that demonstrate one particular functionality of
Adobe AIR runtime, using HTML/Javascript code.

Here is the blog entry where Kevin Hoyt discusses and provides the
download:
http://blog.kevinhoyt.org/2007/06/27/35-air-examples-for-javascript-developers/

Quick link for downloading:
http://blog.kevinhoyt.org/wp-content/air-js-examples-v1.zip

There are also some more detailed Air Sample Apps available at Adobe
Labs:
http://labs.adobe.com/technologies/air/samples/