The Greg Bahnsen – Gordon Stein debate of 1985.
As one who is not smart enough to enter the larger public arena of apologetics, nevertheless I’ve been a serious follower of what I consider to be the best of the Christian apologists for more than 30 years, and I consider THIS to be the smack-down of the last century.
It occurred at the University of California, Irvine, in 1985. Greg Bahnsen died December 11, 1995.
Do not let the fact that he was a Presuppositionalist generate a bias against him. He was a master debater, immensely Christ-centered and immensely brutal on his opponent. All while maintaining a 1 Peter 3:15 graciousness.
Here is an excellent, brief analysis of the debate from an eye-witness perspective.