This week in the Bloggography Tutorial we learned about the Rule of Thirds. Basically, you imagine a tic-tac-toe board over the viewfinder and attempt to position your subject where the lines intersect. This usually enhances the aesthetic quality of your pictures. You can read the full explanation here.
Here is my best picture from the week using this Rule:
I went back and looked at some on my pictures over the last year and discovered that about 80% of "My Favorites" follow this rule. I never realized it.