I have been working with Adin to help him with side-sitting (sort of like cheerleaders do), and moving from sitting to hands and knees. He's become more adventurous when he's sitting. He'll reach further and further away to get a toy. A few times now I've seen him get down to his hands and knees by himself, although he doesn't stay up on his knees very long. He plops down on his tummy for a couple minutes and then cries to be moved. I guess after all that work, he's too tired to roll over himself!
I love how he leans his head to mine for kissing and nuzzling. So sweet.