Evan rolled over from back to tummy for the first time tonight! He did it once and then just kept doing it every time we put him on his back. Once he's on his tummy though, he's still not quite sure how to get back on his back and that seems to frustrate him. If he's rolls over from tummy to back it's usually an accident. He's also learned a new way to be mobile - I call it the 360. When he's on his tummy facing one direction, he will slowly pivot himself all the way around until he's back to where he started. I feel crawling may be right around the corner - he might not be willing to wait until we get a house!