I'm interested in cross-pollination of issues and groups as I believe many people here are.  Software applications can be relatively simple to design, especially if done in an Open Source environment.  

Ex:  An application could be created for bloggers that would tabulate district races in various states.  The software would be told where to look for latest poll results and turn them into graphs that could be easily printed or posted on blogs.

This program could be downloaded for free and would include instant free registration on a support forum.  The support forum would be added to MyDD, KOS or any other top blog site, bringing in politically-minded people that might not be partisan or even people from the other side that would like to debate.

Other ideas:

Newsreaders with the Kos or MyDD logos, Movie Application Skins, Blog Themes etc.