Built the Batcave (6860) with my son tonight. Or may I say, I took the minifigures out, built the vehicles, and proceeded to build the rest of the Batcave as he played. I made him go to bed before it was finished, so he got in trouble for whining, not listening, and not staying in bed, which is pretty much a typical night. Weird, this box actually had 2 bag # 2's in it, so I have an extra Poison Ivy, Holding Cell, and another entire girder section. So, it looks like I might be customizing a third leg of the Batcave this week too.