Sadako said:

What's your response to atheists who are not skeptics (or to phrase it another way, people whose atheism is not informed by their skepticism), and believe in ghosts, Bigfoot, alien abduction stories, Nostradamus, water crystals, etc.?

I find them to be annoying blowhards, who think that religion is just another conspiracy, so they pat themselves on the back for wearing their tin foil hats when they walk past churches, so that super secret Catholic Technology they stole from Nikola Tesla can't brainwash THEM, no siree! They're SMARTER than that, man--it's just another way for The Man to keep us from knowing the truth about Area 51, man. You should read this Geocities page from 1997, it tells you all about how the Mayans knew this was going to happen, so they sank Atlantis and then shot JFK. Then you will have your eyes opened, man. It's like, whoa. Totally.

Personally, I think these atheists practice atheism just like some theists claim all atheists do -- ie. as a religion.