Having a 10yr old, a soon to be 9 yr, a 4yr old and a near 6 month old, believe me it is exciting..

Funnily enough i was watching short clips of my kids at their crawling and talking stages today, actually cried, the innocent, all about mummy phase.. LOL..
Gorgeous i love it, the first little steps an dparticular one of my ds's walking around aware of the camera staring with his big blue eyes saying my daba, (dada) and the kids all watching tv with my youngest ds trying to sit on them lol

So my age favourite would be the independant stage, growing to the stage of starting their little journeys of discovering their feet and what to do with them, and the stage of talking, the mixed mumbo jumbo of english and baby babble.