Adobe AIR is a cross-operating system runtime that enables you to use your existing HTML/Ajax, Flex, or Flash web development skills and tools to build and deploy rich Internet applications to the desktop.
For dummies: a cool browser that runs nice looking services on your MAC or PC. One thing: you must be online for most services offered.
Few services I like:
- Adobe Media Player
- AOL 100 videos
- Google analytics THE BEST
Check out those 2 websites for showcases http://freshairapps.com/ and http://flex.org/showcase/
Here is a small video embedded here thanks to AOL 100 Videos.