I never will forget a seminar in school where I got into a shouting match with a philosophy prof. He started out making some snide comment about Jesus, and I told him he was either historically ignorant or deliberately dishonest, and either disqualified him from from speaking to us on the subject. He was vicious and I was a bit of a pit bull myself. We went at it hammer and tongs over the centrality of the resurrection of Jesus. At one point, I threw a pen I was holding up against the wall and said I had never met anyone so intellectually dishonest and "with the exception of myself, I have never met anyone so academically arrogant with less basis for their arrogance." So here I was feeling bad about dishonoring Jesus by going on a RANT in his name, and some guy walked up to me and said "I have wanted to know about God for a while now and you seem like you know what you are talking about." We went to my apartment and the guy wound up a professing Christian. So, while I would not be exactly proud of my conversation with my professor, it was an example of how God can use a crooked stick to draw a straight line.
I still think having an altar call at a HS graduation was really really on the dumb side. It is not like Jesus was down front with the girl and they had to walk down in order to meet him.
I stand guilty along with you brother. Thanks.