It would be great to have a program that does the same thing for telephone calls. A web app that let's you record a message, that is then called into a representatives phone lines.

I'm Paddy Mullen, and instead of donating $50 to your campaign, I donated it to the EFF. I did this because you ignore the rights of the citizens and haven't held the NSA responsible for the infringements on privacy.

Let the staffers get 100s - 1000s of calls that way.