I've only ever had one proper one;

I'm in my workshop, and all the way round we have racking with glass in it (windscreens, door glass etc) Click this link for a photo of what it's laid out like;

PICCY

Right, so on the left in the pic you see the racks with the door windows in. These racks are 2ft deep, each "layer" is 15mm wood base, with poles front and back to slot the glass in to. The glass is wedged pretty tightly so it don't fall out, and being 2ft deep, there's not much chance of that anyway....

So one day I'm in the workshop, and I'm right over on the right side of the pic, a good 20-25ft from the racks on the left, when for some reason I look over to the rack, and just as I do, a door glass fell out the rack (2nd tier) and dropped to the floor. But when I say fell out, whats erie about it is that it "slid" out sideways, the full 2ft, so it was completely clear of the rack and THEN dropped. Not rolled out as such - it was as if you pulled it out with your own hands, then let go!

Strangest thing I ever saw! I was the ONLY person in there that day (on a Sunday) and I was the only person to have taken glass out the racking on the left, and I never touched the bit of glass - or ones either side of it - that day. And it wasn't hanging out either, cos I walked past it 20 or so times and anytime I see glass not put away properly I make sure it is......

Strange!