This talk by Dr. Ken Miller is really amazing both in how clearly it refutes creationism / intelligent design, and also because it illustrates the uphill battle that science faces against religion.
Science is hard. This is highly technical stuff, and it is beyond the grasp of the average American. It's a complex, technical argument, but worse, it takes five minutes of paying attention. How can Dr. Miller convince a nation that thrives on sound bites and watered-down science to pay attention?
Happily, my audience has a longer attention span. Enjoy, it's great stuff!