Tap can roll (and darn near crawl!)
I was reading online and Tap was on his tummy near me (for those keeping count, he is 12 weeks and almost 3 months). Sooooo he began to fuss and I was going to move him only to find he had flipped himself to his back! In a mad attempt to recreate this success, I put him on his tummy again. This is making him quite mad at the current moment, but has produced enough flailing about to have propelled him forward about 3 feet from his starting position in an almost army-man style crawl (though truthfully it is more of a disdainful wiggle).