One stereotype I run across that religious people have about the non religious (and especially about atheists and agnostics) is that they are bitter or angry at god or are just generally angry people who use their intellect and logic to block god's saving truth (and that a non theist can just flip a switch an "believe"). I just had to read/critique a short story written by someone in my writing group (who is born-again) and the atheist character in his story is a very angry, bitter person.
Another cliche I've seen trotted out recently is that atheists/secularists/humanists etc. are very egotistical people who want to BE god. I really don't know where that strange idea came from.
Conversely, many non theists seem to think that all or most religious people are foolish/weak/frightened sheep who would rather be told what to do than use their noggins. This ignores the fact that there are a spectrum of theistic beliefs and traditions, and not all religious people are narrow minded fanatics who think the Earth and universe are only 6000 years old and everyone else is going to hell.
Certainly, there are bitter and egotistical atheists, and there are weak/foolish (and intolerant) theists, but people of all beliefs fall along a complex continuum.
