J.C. Thibodaux over at http://arminianperspectives.wordpress.com is dealing with commonly used Calvinistic arguments and showing their fallacious nature. His commentary is clear, concise, and very thorough. Check them out!
Fallacy #1: “If we have libertarian free will, what makes us choose one way or the other?”
Fallacy #2: Arminianism entails salvation by “inherent ability”
Fallacy #3: We Choose by ‘Chance?’
Fallacy #4: “Free Will is the Power to Do Anything!!”