Apps for America Contest
Making government accountability Open Source! That's what Sunlight Labs is trying to do with this contest. And you could win $15,000! Just take one of their databases on Congress and make a cool new front end.
"Entries can be client applications, web based applications, applications that use the Adobe AIR platform, Java applications or whatever other kind of platform you'd like to write it in. We use Django for most of ours. "