There was a guy in my old gym who had some major OCD going on. He used to pay to come in and put everyone's weights away. Not just away, but exactly where he wanted them. He had some mental picture of exactly where each plate belonged, and every dumbell, bar, everything. And we had about three different brands of plates, but he wouldn't mix them.
He never worked out, just cleaned up, and paid the gym to allow him to do it.
Oh yeah, it was annoying cos he'd try and take them while you were using them.