This one has that whole "wow" thing going in spades. LOVE the eyes, but it's also the angle, the shallow DOF, the "look" you're getting, the tones. Great portrait. Hope it's framed in the kid's house somewhere!
As far as baby portraits go - this is about as good as it gets. I'd love to see the post-processing on this for the colour and contrast - it looks like Color Efex Pro's Pro-Contrast filter, but I hope you post the details.