Gamerscorechart.com tracks your Gamer score! It's a cool way to visualize your Xbox activity over time. So, go over, enter in your Xbox Live Tag….and then come back in a week or so and check out what sort of progress you've made.
It's actually really cool, I've added myself a few days ago – and I've only gained like 10 points since then, but it was still really cool to check it out.