Skwerlhugger Will, Mega Wolf and Jesse, as you already are aware, are examples.
Religion, a good topic to debate as long as it does not get into personal attacks.
Politics, another good debate topic.
Sex... abortion would not be a topic if sex was not involved. Of course, if you are talking the immaculate conception... well...
My voice is not deep enough to mimic Henry Kissinger.
I like debates because I learn. It makes me want to do indepth research on the particular topic of debate. You are exposed to new ideas and thoughts through debate.... so in other words... you are not leaving this topic for CERN. If you do go, have fun in the world's largest particle physics laboratory.