here's something I thought might be fun:

I'm gonna try and make one that's easier to read, and will maybe work better in a banner or something. Let me know if you think the idea is worth pursuing.
I also thought it might be funny to do a spoof CAM advert, with an SGU product that boosts the immune system, providing immunity to hauntings, alien abduction, possession, um, what are the other things skeptics are immune to? (i thought about hell, but that deviates from the SGU a little)
any thoughts on this idea? that will take some actual design work, rather than just some photoshopping, so I wont bother if you aren't into it.