You know you probably take too many pictures (is there such a thing) when you're kid starts making this face every time you tell him to "Say Cheese". Even Steve has started doing it.
I can sometimes get a genuine smile with good old fashioned reverse psychology. You know the "Don't you dare laugh" trick. And every once in a while and I do mean once in a while, he just cooperates and I get a keeper like this one:
Oh, my sweet, sweet boy, I love him so much.
How do you get your kids to cooperate for pictures?