I'm a little confused, do you mean like a glass top so that you can look down into the tank, because there is a club here in austin with a shark tank bebeath the floor.
Gr8KarmaSF, I can't see the vids in the link... I could kill you for that.
I'm actually not sure if it is still there, because I seem to remember some people that were mad about it because it's a fish tank in a loud club, beneath peoples feet and whatnot.