I'm a radio producer and I need to book an expert guest to discuss SOPA tomorrow night. Please help, Reddit!

The host for whom I'm producing is planning on discussing SOPA tomorrow night. We're looking for someone who is not only knowledgeable but also engaging and entertaining. I know Reddit is all over this, so any names you could give me would be much appreciated.

Edit: You guys are the best. Mike Masnick confirmed for tonight!