In my spare time I co-host a podcast about classic video games called The Retro League (http://TheRetroLeague.com). This is a little application for fans of the show. I don't expect it to get a ton of downloads or anything, it's just a way to connect with fans.
Promoting the podcast was one goal, the other was learning more about Android development. To build this application I had to sort out how to execute asynchronous tasks and integrate with the Facebook API. The source code is available in the download section if either of these are interesting to you. At some point I'll turn that part of the code into a tutorial or whatever.