At four and a half months, he remains the happiest baby I've come across (and I'm not just biased!). His days are filled with observing our household chaos, smiling constantly, entertaining himself (probably too much), tickling his own feet, and, of course, eating and sleeping.
We still haven't gotten over the rough nights. I'm hopeful I'll have good news to report soon but for now we will keep taking it one night at a time. It's hard to hold the crappy nights against him when he wakes up in such good spirits. All. The. Time.