We have a roller-overer.
Just in the last few days, Liam has started rolling over. He rolls from front to back, and back to front. He's definitely enjoying tummy time a little bit more now that he's got more control of his movements.
I'm amazed that during tummy time Liam can now grab toys and bring them to his mouth. Of course everything goes in the mouth now! I've realized that this little guy just loves to play and be entertained, and rolling just adds to some activities that can keep him occupied throughout the day!