Evidence for God from Science

I never really understood what the term meant. Can someone explain this to me?

It means they attack a position you do not hold too. Like for example I argue for the Bible being true and they counter argue that the Bible is not true because the age of the Earth is millions of years, since I am a Theistic Evolutionist I don't hold to the Y.E.C. interpretation and the argument is invalid.

Dan covered it pretty well, just a rephrase, a straw man is basically a false position created and attributed to the other person by you, only to be knocked down by you easily, to give you some credit in the eye of the beholder.

A list of "logical fallacies":
http://en.wikipedia.org/wiki/List_of_fallacies