I think it would be a mistake to spam with Ron Paul this and that. However, still call and spread the TRUE freedom message. Make them look like hypocrites that hate freedom, which they do. Its best to be their friend, and then say,well there was one thing I may disagree with....then hit them upside the head real quick with the truth. If there are enough calls over several weeks, Hannity will lose his punch, and the message of freedom will become infectious. There should also be some satirical calls to even throw him off more.
After a few weeks, then bring Ron Paul into the conversation. It is very important to know your stuff and say your a long time conservative. This is a long term strategy, but willbe much more effective. They are propogandists, lets beat them at their own game.