This is a photo of Andrew at about 8 or 9 weeks.
The big news ... Andrew rolled over yesterday! Of course, he didn't get very far, his arm gets trapped under him and he squawks a bit until you roll him onto his back, whereupon he proceeds to roll over again. It's great fun. He doesn't like tummy time yet, but he holds his head up just fine when held upright.
He is getting better at batting things with his hands. He's started sucking on his hands, even when he's not hungry, so I guess you could say he's "discovered" them. Either that or he's teething (!). He smiles readily at people, and I even caught him the other day smiling at the toys over his bouncy seat. They don't smile back, though. Andrew can also follow moving objects across the room, and will occasionally get distracted by his surroundings while nursing.
Don't know exactly how much he weighs, but he is big. Not fat, just long. What a punkin.