Not really surprised by the first stall being the cleanest, since that's usually what I've noticed in my visits to public restrooms.
And yeah, the shake table was pretty cool. Even if they do have a bunch of consultants on hand, I still find myself constantly impressed by Tori, Kari and Grant's building skills, and their ability to engineer such complicated devices.
And it WAS pretty amazing watching something as solid and sturdy-looking as that brick structure slowly come apart. It's one of those things you just can't imagine happening until you actually see it.