Last Night Sam Shamoun debated Matt Slick on the "L" of TULIP:
Sam Shamoun Vs Matt Slick: Is Limited Atonement Biblical?
While I strongly disagree with Shamoun on many topics, he did not just win this debate--he destroyed Slick's arguments and (blasphemous) Calvinistic theology.
For more problems with Reformed theology, see:
An Examination and Critique of the Theological Presuppositions Underlying Reformed Theology