He's laughing more (though not so much at this exact moment), and he's become noticeably ticklish. Christie tells me that he can roll over, but I say that's blatant lies: I haven't seen him do it, yet. He can support his weight on his own two feet, though of course he can't balance yet.
We could be in for a rough December, though, it looks like his teeth are comin' in. I suggested a steady diet of Everclear in the Similac until that's over, but Christie has vetoed this idea. Everyone's a critic!