Friends of my brother's brought their 4 month old over last night.
He was also really stiff, spent most of his time mesmerized by lights and the TV, and was generally non-interactive. I felt kind of bad for the little guy - maybe he was just weird because I was new. Maybe they don't hold him enough. I'm just not sure. They both work full time, so maybe they're just doing the best they can. I looked back at Freyja's pictures at 4 months old and she was way more interactive, better developed, and smiley. She was one rockin' baby - I appreciate that more now than I did then.
I got zero baby fever. That's ok. I wanted to be done by the time I was 30 - I have four years yet.