I propose a discussion on the question,
"What biological evidence is there against Intelligent Design?"
Discussion should center around what we would expect to see in extant species if in fact organisms were designed by an intelligent being? The assumption is that as intelligent beings we should be able to make such an assessment. Then, having made the assessment, it should be relatively easy to identify flaws in design that would suggest that rather than intelligent design we are dealing with some kind of ad hoc mechanism, such as evolution. To simplify things, I suggest that we focus on the human body mostly, but if someone has a really good example from another species - particularly another primate - let us hear it. But in order to not get caught up in the "transitional fossil" argument - which already has a current thread, I would like to stick to existing organisms.
I think Biological Evolution is the best home for this, as ID is usually proposed as an alternative to evolution.