Weird me out too... I just thought that sounded like what TGC was talking about...
I wish I could afford to better feed my carrier addiction, but because I spend most of my time sitting at my desk or rolling on the bed with baby I can't really justify it. And our basically income-less state for the next few months makes it even less justifiable, though I did drop a good chunk of change on the MT.
Dov has just started rolling over both ways, but we really couldn't leave him alone on the bed even before that because even with just rolling one way he was still able to get anywhere he wanted with a combination of twisting, flopping, scooting, etc. Now he just does it faster!
He also has this new funny habit of flopping his mouth. Okay, that didn't sound nice
What I mean is, he makes eye contact, and then opens and closes his mouth a few times in close succession, frequently followed by a high pitched but low volume shriek. He LOVES it when we imitate him, and we can keep a silent "conversation" going for some time like this. (possibly forever, but I always get tired) DH caught a great video where it's really clear that he's responding to me. MIL is convinced he is trying to talk but hasn't quite gotten the hang of the vocal chords yet, and I'm not sure she's wrong.