any While You Were Out watchers?

[mertvie-tsveti.livejournal.com]

In a past episode of WYWO(last week's i think) where they decorated this guy's den in the style of a 50s diner, they made a table/shelf in which they arranged cars and plates and they poured in this clear liquid that they said levels off by itself and dries perfectly clear and solid. What was that? Does anyone know what I'm talking about? Where can I get it? What else can I use it to make?

thanx!