From other's reports, Hulk has been rolling over from his front to his back for a little over a week. I had yet to see it. But this morning, he was awake and ready for the day at 6:30 (heavy sigh) so I brought him into bed to see if he would snuggle. He would have NONE of that... so I sat him up (he can sit if you put him in a sitting position). He proceeded to throw himself forward, put his butt in the air, and flip himself onto his back. And then giggle. And then cry to have me sit him up again, so he could do the whole thing over again.