Miles is moving around like crazy now. He's rolling over, scooting around, belly flopping, and sitting up, but the poor little guy just can't manage to actually crawl forward. I keep leaving the room for a couple minutes to come back and find him in a position like this:
"I'm stuck under the entertainment center, Mommy!"
Miles backs himself up to the couch, to the chair, to the corner of the room, to the entertainment center. You name it, he can back himself up into it. Unfortunately, this often ends in him getting very frustrated because he's continually moving away from whatever he's trying to move toward. Also, he frequently gets stuck so that he can't back up anymore and he can't sit up.
You'll be crawling forward before you know it, sweetie pie!