Yup! He can stand while holding on to something! For a while now, he's really enjoyed it when we stand him up. A couple months ago, he started standing while we held his hands. Now, he can stand while holding onto furniture! (I took these photos on his 7-month birthday, and finally got around to posting them.)
Can you tell he's pretty proud of himself?
He'll also walk -- well, wobble like a drunkard, actually -- while we hold his hands, too. Unfortunately, I need a third hand to get video of that.