If you really want to jump the traffic on your blog site, start a discussion on Intelligent Design. Case in point: Derek Lowe, a scientist who blogs at Corante offered his two cents on Intelligent Design this past week. His usually moderately commented blog became a busy discussion board over the course of the week. It's fair to say that this topic brings out the liveliness in people.
The frustrating thing to me is that while I believe that ID has it's merits and is worth discussing, I can understand the point of view of the scientist who just wants to stick to the evidence. If they allow the possibility of ID in their studies, it raises a lot of questions for them -- if we were intelligently designed, why did this designer create such-and-such in us that causes us to so-and-so? The ID'er will typically have a response which is based on theology, and at the point the scientist takes one step out of the laboratory and one step into the seminary.
So scientists generally stick with macro or Darwinian evolution, which is itself not without it's difficult questions but allows the scientist to keep some uncomfortable thoughts about God at bay.