If you have a baby on the way I can recomend this camera basically from the sensor and its video mode. Because you mostly would be shooting video of your little boy and the 18MP sensor is the same on some higher end models, thats enough for me to consider it over the Nikon 5100.
I personally think that the articulating screen is probably the best way to get started in DSLR territory mainly because it offers a lot more felxability for first time users who dont religiously use an opitical view finder.
Walking the dogs mean you can hold the camera low and still see the image wihtout having to get on your knees to shoot photos, the same with little children. I honestly dislike seeing video and photos of babies taking their first steps etc from the angle of the person holding the camera up 10billion stories high over the kid.... A camera like this with a rotating screen will help you get down low and probably get some really nice shots of the little one attacking the lend with his sticky fingers
3.7 Frames a second isnt bad at all - I had 3fps in my old Olympus I sold and that was still used for action photos. Not the best but you will always get a few shots you will want to keep.
and if you are the kind of person that likes to fiddle, 18MP means you can chop the image relatively in half and still maintain a 10MP image.
Some ppl can dismiss this camera JUST because its upgrade from the previous model is a screen and wireless trigger for flash guns. But if you are getting started, the usefullness of these features is deffinately worth the money... REmember, even Apple had to raise the price of the iphone when they added a crap camera to it.
1) Olympus OM1 [Zuiko Auto-S 50mm f/1.8]
2) Pentax MZ-60 [Sigma 28-90 & 100-300]
3) Canon 7D [EF-S 15-85 & 70-200mm f/4 IS & 50mm f1.4]
4) Leica M [50mm Summicron Pre-aspherical - Silver]http://www.poetproductions.net