This one is called an Argiope. Technically, this is an Argiope aurantia, otherwise known as a black and yellow garden spider, or a "writing" spider, because he weaves a line of white X's down the center of his web. Actually the big ones are the females and the smaller/wimpy ones are the males. So I am guessing this one is the female.
The Lord sure has been providing us with some sights the last few days. Big ones at that.