I haven't found myself to be overly emotional during pregnancy (in fact, somewhat the opposite), but I did watch a Nature special the other day on mothers and babies (forgetting, of course, that these things always end with hyenas) and there was a scene when a mother lemur has to decide to abandon her baby. She keeps coming back to look and then leaving again and the little baby is just laying there crying.... Oh yeah, I pretty much lost it. Sooooooooo freaking sad.
I get really excited and squeaky about the little clothes. I just got some cloth diapers in the mail and I carried one around with me for like an hour because it was so cute.