My Child is Genius

Okay.
Maybe genius is a stretch. But today he did something really cool and new to me. He wrote "Mommy" and then proceeded to write the shortened version of his name.
I was shocked.
He'll be 4 in April, and so I know it's really normal for him to be at a stage where he should be interested in letters. The problem is, he hasn't been. At all.
Here's the thing. I could read when I was 3 and a half, and I love reading and writing and spelling and grammar. So, the fact that he was completely uninterested in writing or learning his letters was beginning to bug me a bit.
You know, in that way that you are well aware it shouldn't bug you and you shouldn't pressure your child to perform, but would it kill you to want to write your name?
More startling was the fact that he was and is enamored by science and math. Good for him, but I suck at science and math. So the fact that he wanted to sit and write letters tonight? Awesome.
As I've mentioned, every evening after Handy Manny we turn off the tv and have "fun time." After a few weeks this is working out quite well. There are rarely fights over turning the tv off, and he comes up with some interesting things to do. Tonight was when we worked on our letters. He wanted to write his name and mine and daddy and baby. It was pretty cool.
I know I know a lot of kids have mastered the art of writing their name. And good for them. But, I'm just really glad we're finally hitting this milestone.
It's not really legible, and by the time he starts JK in September I'd like him to be able to write his name clearly, but for now I'll take it!