SITTING UP
Tobin's already to a point where he doesn't just want to be cradled in our arms. He wants to be sitting up. Not propped up against us (that's been going on for a few weeks now), no. He wants to be sitting up, and holding himself forward, on his own! He's just so strong.
A 19 pound 3.5 month old, wearing 6 month clothing is a crazy thing (at least in my experience).

EYES WIDE OPEN
This kid is so aware of what's going on around him. Not only does he like to sit up (as I mentioned above), but his eyes are just WIDE open anytime he's awake. He just watches everything like a hawk. And the best part is, that whenever one of us comes into view, the instant reaction is a gigantic smile. (I love that smile.)
But to look at his eyes (especially when he's looking intently at you) is just , I don't know. They're just incredible to look at. I know. I'm his dad, and so I'm biased, but it's just relaxing watching him...as long as he's happy!