As I was looking through my 2008 Halloween photos, I have to say that some of my favorites were the overhead costume shots. There is something about having a different perspective that catches your eye. So as you prepare for many Halloween photos- think of looking above, getting down low, or catching some little detail that you won't want to forget for years to come.
I also try to make a habit of every holiday, getting a photo with me and the kids together. So often I am the one taking the pictures, so this forces me to get in front of the camera every few months.