I think your understanding of Intelligent Design theory is, um, lacking. If you want to argue against ID, you might want to familiarize yourself with their arguments.
Actually, I was being generous. To the pre-scientific ignorant, creating gods to explain natural phenomenon makes a certain amount of sense in that it is consistent with their knowledge and explains the phenomenon, and, frankly, they cannot be blamed for failing to have the insight, knowledge and technology we have.
IDers and Creationists have no such excuse. They're mired in their ignorance and rejoice in it. Those, like Johnson, Behe, Hovand, Gish, Morris, DI, ICR etc., are like those televangelists and criminals who prey on old people and steal their pension checks. To them, they'll do anything, push any kind of outrageous bullshit in order to keep the cash registers filled, regardless of whether we end up with another generation of science illiterates.
All that to say that you can't come up with one irrefutable piece of evidence?